[PATCH] usb: rework usb_maxpacket() and remove its third argument

[PATCH] usb: rework usb_maxpacket() and remove its third argument

[Vincent Mailhol]

Change the prototype of usb_maxpacket() from:
| static inline __u16
| usb_maxpacket(struct usb_device *udev, int pipe, int is_out)

into:
| static inline u16 usb_maxpacket(struct usb_device *dev, int pipe)

and rewrite the function.

Rationale:

  * The third argument of usb_maxpacket(): is_out can be derived from
    its second one: pipe using usb_pipeout(pipe). Furthermore,
    usb_pipoout(pipe) is being called within usb_maxpacket()
    regardless to confirm the input.

  * This function is not exposed to the UAPI so return type should be
    u16, not __u16.

  * Let's not reinvent the wheel and rely on usb_endpoint_maxp() to
    make this a one liner function.

All the users of usb_endpoint_maxp() are then updated.

Two of the users: oxu210hp-hcd.c and isp1760-hcd.c rely on a local
macro: max_packet() to mask the maximum size. Because this masking is
already performed by usb_maxpacket(), this patch also removes these
redundant sanitization and remove the local macro if not needed any
more (keep it in oxu210hp-hcd.c which uses it elsewhere but remove it
in isp1760-hcd.c).

CC: Jiri Kosina <jikos@kernel.org>
CC: Benjamin Tissoires <benjamin.tissoires@redhat.com>
CC: Ville Syrjala <syrjala@sci.fi>
CC: Dmitry Torokhov <dmitry.torokhov@gmail.com>
CC: Henk Vergonet <Henk.Vergonet@gmail.com>
CC: Sean Young <sean@mess.org>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: Benjamin Valentin <benpicco@googlemail.com>
CC: Oliver Neukum <oliver@neukum.org>
CC: "David S. Miller" <davem@davemloft.net>
CC: Jakub Kicinski <kuba@kernel.org>
CC: Woojung Huh <woojung.huh@microchip.com>
CC: Felix Fietkau <nbd@nbd.name>
CC: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
CC: Ryder Lee <ryder.lee@mediatek.com>
CC: Kalle Valo <kvalo@kernel.org>
CC: Matthias Brugger <matthias.bgg@gmail.com>
CC: Stanislaw Gruszka <stf_xl@wp.pl>
CC: Helmut Schaa <helmut.schaa@googlemail.com>
CC: Duncan Sands <duncan.sands@free.fr>
CC: Alan Stern <stern@rowland.harvard.edu>
CC: Olav Kongas <ok@artecdesign.ee>
CC: Rui Miguel Silva <rui.silva@linaro.org>
CC: Jaroslav Kysela <perex@perex.cz>
CC: Takashi Iwai <tiwai@suse.com>
CC: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/hid/usbhid/hid-core.c                 |  2 +-
 drivers/hid/usbhid/usbkbd.c                   |  2 +-
 drivers/hid/usbhid/usbmouse.c                 |  2 +-
 drivers/input/misc/ati_remote2.c              |  2 +-
 drivers/input/misc/cm109.c                    |  2 +-
 drivers/input/misc/powermate.c                |  2 +-
 drivers/input/misc/yealink.c                  |  2 +-
 drivers/input/tablet/acecad.c                 |  2 +-
 drivers/input/tablet/pegasus_notetaker.c      |  2 +-
 drivers/media/rc/ati_remote.c                 |  4 ++--
 drivers/media/rc/mceusb.c                     |  2 +-
 drivers/media/rc/streamzap.c                  |  2 +-
 drivers/media/rc/xbox_remote.c                |  2 +-
 drivers/media/usb/tm6000/tm6000-dvb.c         |  2 +-
 drivers/media/usb/tm6000/tm6000-input.c       |  2 +-
 drivers/media/usb/tm6000/tm6000-video.c       |  2 +-
 drivers/net/usb/cdc_ncm.c                     |  4 ++--
 drivers/net/usb/lan78xx.c                     |  4 ++--
 drivers/net/usb/rndis_host.c                  |  2 +-
 drivers/net/usb/usbnet.c                      |  4 ++--
 drivers/net/wireless/mediatek/mt76/usb.c      |  2 +-
 .../net/wireless/ralink/rt2x00/rt2x00usb.c    |  4 ++--
 drivers/usb/atm/usbatm.c                      |  2 +-
 drivers/usb/c67x00/c67x00-sched.c             |  4 ++--
 drivers/usb/core/hub.c                        |  2 +-
 drivers/usb/host/ehci-q.c                     |  4 ++--
 drivers/usb/host/fhci-hcd.c                   |  3 +--
 drivers/usb/host/fotg210-hcd.c                |  2 +-
 drivers/usb/host/isp116x-hcd.c                |  5 ++--
 drivers/usb/host/isp1362-hcd.c                |  6 ++---
 drivers/usb/host/max3421-hcd.c                |  6 ++---
 drivers/usb/host/ohci-hcd.c                   |  3 +--
 drivers/usb/host/oxu210hp-hcd.c               |  4 ++--
 drivers/usb/host/r8a66597-hcd.c               |  3 +--
 drivers/usb/host/sl811-hcd.c                  |  6 ++---
 drivers/usb/isp1760/isp1760-hcd.c             |  7 ++----
 drivers/usb/misc/ftdi-elan.c                  | 15 ++++--------
 drivers/usb/misc/lvstest.c                    |  2 +-
 drivers/usb/storage/onetouch.c                |  2 +-
 drivers/usb/storage/transport.c               |  2 +-
 include/linux/usb.h                           | 23 ++-----------------
 sound/usb/line6/pcm.c                         |  4 ++--
 sound/usb/midi.c                              |  4 ++--
 sound/usb/usx2y/usb_stream.c                  |  6 ++---
 sound/usb/usx2y/usbusx2yaudio.c               |  2 +-
 sound/usb/usx2y/usx2yhwdeppcm.c               |  2 +-
 46 files changed, 71 insertions(+), 102 deletions(-)

diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 54752c85604b..4490e2f7252a 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -387,7 +387,7 @@ static int hid_submit_ctrl(struct hid_device *hid)
 
 		usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
 		maxpacket = usb_maxpacket(hid_to_usb_dev(hid),
-					  usbhid->urbctrl->pipe, 0);
+					  usbhid->urbctrl->pipe);
 		len += (len == 0);	/* Don't allow 0-length reports */
 		len = round_up(len, maxpacket);
 		if (len > usbhid->bufsize)
diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c
index df02002066ce..b4b007c4beb6 100644
--- a/drivers/hid/usbhid/usbkbd.c
+++ b/drivers/hid/usbhid/usbkbd.c
@@ -279,7 +279,7 @@ static int usb_kbd_probe(struct usb_interface *iface,
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	kbd = kzalloc(sizeof(struct usb_kbd), GFP_KERNEL);
 	input_dev = input_allocate_device();
diff --git a/drivers/hid/usbhid/usbmouse.c b/drivers/hid/usbhid/usbmouse.c
index c89332017d5d..fb1d7d1f6999 100644
--- a/drivers/hid/usbhid/usbmouse.c
+++ b/drivers/hid/usbhid/usbmouse.c
@@ -123,7 +123,7 @@ static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_i
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);
 	input_dev = input_allocate_device();
diff --git a/drivers/input/misc/ati_remote2.c b/drivers/input/misc/ati_remote2.c
index 8a36d78fed63..946bf75aa106 100644
--- a/drivers/input/misc/ati_remote2.c
+++ b/drivers/input/misc/ati_remote2.c
@@ -639,7 +639,7 @@ static int ati_remote2_urb_init(struct ati_remote2 *ar2)
 			return -ENOMEM;
 
 		pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress);
-		maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+		maxp = usb_maxpacket(udev, pipe);
 		maxp = maxp > 4 ? 4 : maxp;
 
 		usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp,
diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c
index f515fae465c3..728325a2d574 100644
--- a/drivers/input/misc/cm109.c
+++ b/drivers/input/misc/cm109.c
@@ -745,7 +745,7 @@ static int cm109_usb_probe(struct usb_interface *intf,
 
 	/* get a handle to the interrupt data pipe */
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	ret = usb_maxpacket(udev, pipe);
 	if (ret != USB_PKT_LEN)
 		dev_err(&intf->dev, "invalid payload size %d, expected %d\n",
 			ret, USB_PKT_LEN);
diff --git a/drivers/input/misc/powermate.c b/drivers/input/misc/powermate.c
index c4e0e1886061..c1c733a9cb89 100644
--- a/drivers/input/misc/powermate.c
+++ b/drivers/input/misc/powermate.c
@@ -374,7 +374,7 @@ static int powermate_probe(struct usb_interface *intf, const struct usb_device_i
 
 	/* get a handle to the interrupt data pipe */
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 
 	if (maxp < POWERMATE_PAYLOAD_SIZE_MIN || maxp > POWERMATE_PAYLOAD_SIZE_MAX) {
 		printk(KERN_WARNING "powermate: Expected payload of %d--%d bytes, found %d bytes!\n",
diff --git a/drivers/input/misc/yealink.c b/drivers/input/misc/yealink.c
index 8ab01c7601b1..69420781db30 100644
--- a/drivers/input/misc/yealink.c
+++ b/drivers/input/misc/yealink.c
@@ -905,7 +905,7 @@ static int usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
 
 	/* get a handle to the interrupt data pipe */
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	ret = usb_maxpacket(udev, pipe);
 	if (ret != USB_PKT_LEN)
 		dev_err(&intf->dev, "invalid payload size %d, expected %zd\n",
 			ret, USB_PKT_LEN);
diff --git a/drivers/input/tablet/acecad.c b/drivers/input/tablet/acecad.c
index a38d1fe97334..56c7e471ac32 100644
--- a/drivers/input/tablet/acecad.c
+++ b/drivers/input/tablet/acecad.c
@@ -130,7 +130,7 @@ static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
 	input_dev = input_allocate_device();
diff --git a/drivers/input/tablet/pegasus_notetaker.c b/drivers/input/tablet/pegasus_notetaker.c
index 749edbdb7ffa..c608ac505d1b 100644
--- a/drivers/input/tablet/pegasus_notetaker.c
+++ b/drivers/input/tablet/pegasus_notetaker.c
@@ -296,7 +296,7 @@ static int pegasus_probe(struct usb_interface *intf,
 	pegasus->intf = intf;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	pegasus->data_len = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	pegasus->data_len = usb_maxpacket(dev, pipe);
 
 	pegasus->data = usb_alloc_coherent(dev, pegasus->data_len, GFP_KERNEL,
 					   &pegasus->data_dma);
diff --git a/drivers/media/rc/ati_remote.c b/drivers/media/rc/ati_remote.c
index c12dda73cdd5..3155e876616d 100644
--- a/drivers/media/rc/ati_remote.c
+++ b/drivers/media/rc/ati_remote.c
@@ -773,7 +773,7 @@ static int ati_remote_initialize(struct ati_remote *ati_remote)
 
 	/* Set up irq_urb */
 	pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
 
 	usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf,
@@ -784,7 +784,7 @@ static int ati_remote_initialize(struct ati_remote *ati_remote)
 
 	/* Set up out_urb */
 	pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
 
 	usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf,
diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
index 2dc810f5a73f..0834d5f866fd 100644
--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -1728,7 +1728,7 @@ static int mceusb_dev_probe(struct usb_interface *intf,
 		pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
 	else
 		pipe = usb_rcvbulkpipe(dev, ep_in->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
 	if (!ir)
diff --git a/drivers/media/rc/streamzap.c b/drivers/media/rc/streamzap.c
index 16ba85d7c090..deb85330c940 100644
--- a/drivers/media/rc/streamzap.c
+++ b/drivers/media/rc/streamzap.c
@@ -307,7 +307,7 @@ static int streamzap_probe(struct usb_interface *intf,
 	}
 
 	pipe = usb_rcvintpipe(usbdev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(usbdev, pipe);
 
 	if (maxp == 0) {
 		dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n",
diff --git a/drivers/media/rc/xbox_remote.c b/drivers/media/rc/xbox_remote.c
index 98d0b43608ad..7424b2031152 100644
--- a/drivers/media/rc/xbox_remote.c
+++ b/drivers/media/rc/xbox_remote.c
@@ -171,7 +171,7 @@ static int xbox_remote_initialize(struct xbox_remote *xbox_remote,
 
 	/* Set up irq_urb */
 	pipe = usb_rcvintpipe(udev, endpoint_in->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
 
 	usb_fill_int_urb(xbox_remote->irq_urb, udev, pipe, xbox_remote->inbuf,
diff --git a/drivers/media/usb/tm6000/tm6000-dvb.c b/drivers/media/usb/tm6000/tm6000-dvb.c
index 4990fa886d7a..335f747b0375 100644
--- a/drivers/media/usb/tm6000/tm6000-dvb.c
+++ b/drivers/media/usb/tm6000/tm6000-dvb.c
@@ -120,7 +120,7 @@ static int tm6000_start_stream(struct tm6000_core *dev)
 	pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
 							  & USB_ENDPOINT_NUMBER_MASK);
 
-	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	size = usb_maxpacket(dev->udev, pipe);
 	size = size * 15; /* 512 x 8 or 12 or 15 */
 
 	dvb->bulk_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
diff --git a/drivers/media/usb/tm6000/tm6000-input.c b/drivers/media/usb/tm6000/tm6000-input.c
index 84602edf3fe8..5136e9e202f1 100644
--- a/drivers/media/usb/tm6000/tm6000-input.c
+++ b/drivers/media/usb/tm6000/tm6000-input.c
@@ -340,7 +340,7 @@ static int __tm6000_ir_int_start(struct rc_dev *rc)
 		dev->int_in.endp->desc.bEndpointAddress
 		& USB_ENDPOINT_NUMBER_MASK);
 
-	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	size = usb_maxpacket(dev->udev, pipe);
 	dprintk(1, "IR max size: %d\n", size);
 
 	ir->int_urb->transfer_buffer = kzalloc(size, GFP_ATOMIC);
diff --git a/drivers/media/usb/tm6000/tm6000-video.c b/drivers/media/usb/tm6000/tm6000-video.c
index e293f6f3d1bc..d855a19551f3 100644
--- a/drivers/media/usb/tm6000/tm6000-video.c
+++ b/drivers/media/usb/tm6000/tm6000-video.c
@@ -570,7 +570,7 @@ static int tm6000_prepare_isoc(struct tm6000_core *dev)
 			       dev->isoc_in.endp->desc.bEndpointAddress &
 			       USB_ENDPOINT_NUMBER_MASK);
 
-	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	size = usb_maxpacket(dev->udev, pipe);
 
 	if (size > dev->isoc_in.maxsize)
 		size = dev->isoc_in.maxsize;
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 15f91d691bba..63ce9d81f61b 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -441,7 +441,7 @@ static void cdc_ncm_update_rxtx_max(struct usbnet *dev, u32 new_rx, u32 new_tx)
 	 * .bind which is called before usbnet sets up dev->maxpacket
 	 */
 	if (val != le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize) &&
-	    val % usb_maxpacket(dev->udev, dev->out, 1) == 0)
+	    val % usb_maxpacket(dev->udev, dev->out) == 0)
 		val++;
 
 	/* we might need to flush any pending tx buffers if running */
@@ -465,7 +465,7 @@ static void cdc_ncm_update_rxtx_max(struct usbnet *dev, u32 new_rx, u32 new_tx)
 	usbnet_update_max_qlen(dev);
 
 	/* never pad more than 3 full USB packets per transfer */
-	ctx->min_tx_pkt = clamp_t(u16, ctx->tx_max - 3 * usb_maxpacket(dev->udev, dev->out, 1),
+	ctx->min_tx_pkt = clamp_t(u16, ctx->tx_max - 3 * usb_maxpacket(dev->udev, dev->out),
 				  CDC_NCM_MIN_TX_PKT, ctx->tx_max);
 }
 
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index b8e20a3f2b84..7d35b683e005 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -4426,7 +4426,7 @@ static int lan78xx_probe(struct usb_interface *intf,
 		goto out4;
 
 	period = ep_intr->desc.bInterval;
-	maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0);
+	maxp = usb_maxpacket(dev->udev, dev->pipe_intr);
 	buf = kmalloc(maxp, GFP_KERNEL);
 	if (!buf) {
 		ret = -ENOMEM;
@@ -4444,7 +4444,7 @@ static int lan78xx_probe(struct usb_interface *intf,
 		dev->urb_intr->transfer_flags |= URB_FREE_BUFFER;
 	}
 
-	dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1);
+	dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out);
 
 	/* Reject broken descriptors. */
 	if (dev->maxpacket == 0) {
diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
index 247f58cb0f84..de0b00bd2eca 100644
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c
@@ -333,7 +333,7 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
 	net->hard_header_len += sizeof (struct rndis_data_hdr);
 	dev->hard_mtu = net->mtu + net->hard_header_len;
 
-	dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1);
+	dev->maxpacket = usb_maxpacket(dev->udev, dev->out);
 	if (dev->maxpacket == 0) {
 		netif_dbg(dev, probe, dev->net,
 			  "dev->maxpacket can't be 0\n");
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 9a6450f796dc..d5bf5733b277 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -229,7 +229,7 @@ static int init_status (struct usbnet *dev, struct usb_interface *intf)
 	pipe = usb_rcvintpipe (dev->udev,
 			dev->status->desc.bEndpointAddress
 				& USB_ENDPOINT_NUMBER_MASK);
-	maxp = usb_maxpacket (dev->udev, pipe, 0);
+	maxp = usb_maxpacket(dev->udev, pipe);
 
 	/* avoid 1 msec chatter:  min 8 msec poll rate */
 	period = max ((int) dev->status->desc.bInterval,
@@ -1789,7 +1789,7 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 
 	if (!dev->rx_urb_size)
 		dev->rx_urb_size = dev->hard_mtu;
-	dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
+	dev->maxpacket = usb_maxpacket(dev->udev, dev->out);
 	if (dev->maxpacket == 0) {
 		/* that is a broken device */
 		status = -ENODEV;
diff --git a/drivers/net/wireless/mediatek/mt76/usb.c b/drivers/net/wireless/mediatek/mt76/usb.c
index 0a7006c8959b..f84ea6996352 100644
--- a/drivers/net/wireless/mediatek/mt76/usb.c
+++ b/drivers/net/wireless/mediatek/mt76/usb.c
@@ -1132,7 +1132,7 @@ int mt76u_init(struct mt76_dev *dev,
 
 	INIT_WORK(&usb->stat_work, mt76u_tx_status_data);
 
-	usb->data_len = usb_maxpacket(udev, usb_sndctrlpipe(udev, 0), 1);
+	usb->data_len = usb_maxpacket(udev, usb_sndctrlpipe(udev, 0));
 	if (usb->data_len < 32)
 		usb->data_len = 32;
 
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
index 74c3d8cb3100..0827bc860bf8 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
@@ -586,10 +586,10 @@ static void rt2x00usb_assign_endpoint(struct data_queue *queue,
 
 	if (queue->qid == QID_RX) {
 		pipe = usb_rcvbulkpipe(usb_dev, queue->usb_endpoint);
-		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe, 0);
+		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe);
 	} else {
 		pipe = usb_sndbulkpipe(usb_dev, queue->usb_endpoint);
-		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe, 1);
+		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe);
 	}
 
 	if (!queue->usb_maxpacket)
diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index e3a49d837609..362217189ef3 100644
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -1091,7 +1091,7 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
 			snd_buf_bytes - (snd_buf_bytes % instance->tx_channel.stride));
 
 	/* rx buffer size must be a positive multiple of the endpoint maxpacket */
-	maxpacket = usb_maxpacket(usb_dev, instance->rx_channel.endpoint, 0);
+	maxpacket = usb_maxpacket(usb_dev, instance->rx_channel.endpoint);
 
 	if ((maxpacket < 1) || (maxpacket > UDSL_MAX_BUF_SIZE)) {
 		dev_err(dev, "%s: invalid endpoint %02x!\n", __func__,
diff --git a/drivers/usb/c67x00/c67x00-sched.c b/drivers/usb/c67x00/c67x00-sched.c
index c7d3e907be81..a09fa68a6ce7 100644
--- a/drivers/usb/c67x00/c67x00-sched.c
+++ b/drivers/usb/c67x00/c67x00-sched.c
@@ -655,7 +655,7 @@ static int c67x00_add_data_urb(struct c67x00_hcd *c67x00, struct urb *urb)
 			       usb_pipeout(urb->pipe));
 	remaining = urb->transfer_buffer_length - urb->actual_length;
 
-	maxps = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
+	maxps = usb_maxpacket(urb->dev, urb->pipe);
 
 	need_empty = (urb->transfer_flags & URB_ZERO_PACKET) &&
 	    usb_pipeout(urb->pipe) && !(remaining % maxps);
@@ -866,7 +866,7 @@ static inline int c67x00_end_of_data(struct c67x00_td *td)
 	if (unlikely(!act_bytes))
 		return 1;	/* This was an empty packet */
 
-	maxps = usb_maxpacket(td_udev(td), td->pipe, usb_pipeout(td->pipe));
+	maxps = usb_maxpacket(td_udev(td), td->pipe);
 
 	if (unlikely(act_bytes < maxps))
 		return 1;	/* Smaller then full packet */
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 1460857026e0..7781b2d31473 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1635,7 +1635,7 @@ static int hub_configure(struct usb_hub *hub,
 	 * maxpktsize is defined in hcd.c's fake endpoint descriptors
 	 * to be big enough for at least USB_MAXCHILDREN ports. */
 	pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(hdev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(hdev, pipe);
 
 	if (maxp > sizeof(*hub->buffer))
 		maxp = sizeof(*hub->buffer);
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index a2a5c2996350..1163af6fad77 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -645,7 +645,7 @@ qh_urb_transaction (
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
@@ -1218,7 +1218,7 @@ static int ehci_submit_single_step_set_feature(
 
 	token |= (1 /* "in" */ << 8);  /*This is IN stage*/
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, 0);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	qtd_fill(ehci, qtd, buf, len, token, maxpacket);
 
diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
index a8e1048278d0..2ba09c3fbc2f 100644
--- a/drivers/usb/host/fhci-hcd.c
+++ b/drivers/usb/host/fhci-hcd.c
@@ -408,8 +408,7 @@ static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 			size++;
 		else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
 			 && (urb->transfer_buffer_length
-			     % usb_maxpacket(urb->dev, pipe,
-					     usb_pipeout(pipe))) != 0)
+			     % usb_maxpacket(urb->dev, pipe)) != 0)
 			size++;
 		break;
 	case PIPE_ISOCHRONOUS:
diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index c3fd375b4778..f8c111e08a0d 100644
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -2596,7 +2596,7 @@ static struct list_head *qh_urb_transaction(struct fotg210_hcd *fotg210,
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index 8835f6bd528e..70ce03d01435 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -726,7 +726,7 @@ static int isp116x_urb_enqueue(struct usb_hcd *hcd,
 		INIT_LIST_HEAD(&ep->schedule);
 		ep->udev = udev;
 		ep->epnum = epnum;
-		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe);
 		usb_settoggle(udev, epnum, is_out, 0);
 
 		if (type == PIPE_CONTROL) {
@@ -757,8 +757,7 @@ static int isp116x_urb_enqueue(struct usb_hcd *hcd,
 			ep->load = usb_calc_bus_time(udev->speed,
 						     !is_out,
 						     (type == PIPE_ISOCHRONOUS),
-						     usb_maxpacket(udev, pipe,
-								   is_out)) /
+						     usb_maxpacket(udev, pipe)) /
 			    1000;
 		}
 		hep->hcpriv = ep;
diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c
index d8610ce8f2ec..0e14d1d07709 100644
--- a/drivers/usb/host/isp1362-hcd.c
+++ b/drivers/usb/host/isp1362-hcd.c
@@ -1279,7 +1279,7 @@ static int isp1362_urb_enqueue(struct usb_hcd *hcd,
 		ep->udev = usb_get_dev(udev);
 		ep->hep = hep;
 		ep->epnum = epnum;
-		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe);
 		ep->ptd_offset = -EINVAL;
 		ep->ptd_index = -EINVAL;
 		usb_settoggle(udev, epnum, is_out, 0);
@@ -1299,8 +1299,8 @@ static int isp1362_urb_enqueue(struct usb_hcd *hcd,
 			ep->interval = urb->interval;
 			ep->branch = PERIODIC_SIZE;
 			ep->load = usb_calc_bus_time(udev->speed, !is_out,
-						     (type == PIPE_ISOCHRONOUS),
-						     usb_maxpacket(udev, pipe, is_out)) / 1000;
+						     type == PIPE_ISOCHRONOUS,
+						     usb_maxpacket(udev, pipe)) / 1000;
 			break;
 		}
 		hep->hcpriv = ep;
diff --git a/drivers/usb/host/max3421-hcd.c b/drivers/usb/host/max3421-hcd.c
index 30de85a707fe..3a48f544dcdf 100644
--- a/drivers/usb/host/max3421-hcd.c
+++ b/drivers/usb/host/max3421-hcd.c
@@ -546,7 +546,7 @@ max3421_transfer_out(struct usb_hcd *hcd, struct urb *urb, int fast_retransmit)
 		return MAX3421_HXFR_BULK_OUT(epnum);
 	}
 
-	max_packet = usb_maxpacket(urb->dev, urb->pipe, 1);
+	max_packet = usb_maxpacket(urb->dev, urb->pipe);
 
 	if (max_packet > MAX3421_FIFO_SIZE) {
 		/*
@@ -952,7 +952,7 @@ max3421_transfer_in_done(struct usb_hcd *hcd, struct urb *urb)
 	 * USB 2.0 Section 5.3.2 Pipes: packets must be full size
 	 * except for last one.
 	 */
-	max_packet = usb_maxpacket(urb->dev, urb->pipe, 0);
+	max_packet = usb_maxpacket(urb->dev, urb->pipe);
 	if (max_packet > MAX3421_FIFO_SIZE) {
 		/*
 		 * We do not support isochronous transfers at this
@@ -998,7 +998,7 @@ max3421_transfer_out_done(struct usb_hcd *hcd, struct urb *urb)
 		 * max_packet as an indicator that the end of the
 		 * packet has been reached).
 		 */
-		u32 max_packet = usb_maxpacket(urb->dev, urb->pipe, 1);
+		u32 max_packet = usb_maxpacket(urb->dev, urb->pipe);
 
 		if (max3421_hcd->curr_len == max_packet)
 			return 0;
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 666b1c665188..c4c821c2288c 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -181,8 +181,7 @@ static int ohci_urb_enqueue (
 				size++;
 			else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
 				&& (urb->transfer_buffer_length
-					% usb_maxpacket (urb->dev, pipe,
-						usb_pipeout (pipe))) == 0)
+					% usb_maxpacket(urb->dev, pipe)) == 0)
 				size++;
 			break;
 		case PIPE_ISOCHRONOUS: /* number of packets from URB */
diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index e82ff2a49672..aaedf55d3c62 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -1685,7 +1685,7 @@ static struct list_head *qh_urb_transaction(struct oxu_hcd *oxu,
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, !is_input));
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
@@ -1796,7 +1796,7 @@ static struct ehci_qh *qh_make(struct oxu_hcd *oxu,
 
 	is_input = usb_pipein(urb->pipe);
 	type = usb_pipetype(urb->pipe);
-	maxp = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxp = usb_maxpacket(urb->dev, urb->pipe);
 
 	/* Compute interrupt scheduling parameters just once, and save.
 	 * - allowing for high bandwidth, how many nsec/uframe are used?
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 63719cdf6a4e..abb88dd40d4e 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -1867,8 +1867,7 @@ static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
 	td->pipe = hep->hcpriv;
 	td->urb = urb;
 	td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
-	td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
-				      !usb_pipein(urb->pipe));
+	td->maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 	if (usb_pipecontrol(urb->pipe))
 		td->type = USB_PID_SETUP;
 	else if (usb_pipein(urb->pipe))
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 85623731a516..d206bd95c7bb 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -842,7 +842,7 @@ static int sl811h_urb_enqueue(
 		INIT_LIST_HEAD(&ep->schedule);
 		ep->udev = udev;
 		ep->epnum = epnum;
-		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe);
 		ep->defctrl = SL11H_HCTLMASK_ARM | SL11H_HCTLMASK_ENABLE;
 		usb_settoggle(udev, epnum, is_out, 0);
 
@@ -878,8 +878,8 @@ static int sl811h_urb_enqueue(
 			if (type == PIPE_ISOCHRONOUS)
 				ep->defctrl |= SL11H_HCTLMASK_ISOCH;
 			ep->load = usb_calc_bus_time(udev->speed, !is_out,
-				(type == PIPE_ISOCHRONOUS),
-				usb_maxpacket(udev, pipe, is_out))
+						     type == PIPE_ISOCHRONOUS,
+						     usb_maxpacket(udev, pipe))
 					/ 1000;
 			break;
 		}
diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index 79d571f1429b..76862ba40f35 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -825,8 +825,7 @@ static void create_ptd_atl(struct isp1760_qh *qh,
 	memset(ptd, 0, sizeof(*ptd));
 
 	/* according to 3.6.2, max packet len can not be > 0x400 */
-	maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe,
-						usb_pipeout(qtd->urb->pipe));
+	maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe);
 	multi =  1 + ((maxpacket >> 11) & 0x3);
 	maxpacket &= 0x7ff;
 
@@ -1768,7 +1767,6 @@ static void qtd_list_free(struct list_head *qtd_list)
  * Packetize urb->transfer_buffer into list of packets of size wMaxPacketSize.
  * Also calculate the PID type (SETUP/IN/OUT) for each packet.
  */
-#define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
 static void packetize_urb(struct usb_hcd *hcd,
 		struct urb *urb, struct list_head *head, gfp_t flags)
 {
@@ -1809,8 +1807,7 @@ static void packetize_urb(struct usb_hcd *hcd,
 			packet_type = IN_PID;
 	}
 
-	maxpacketsize = max_packet(usb_maxpacket(urb->dev, urb->pipe,
-						usb_pipeout(urb->pipe)));
+	maxpacketsize = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
index 6c38c62d29b2..b2f980409d0b 100644
--- a/drivers/usb/misc/ftdi-elan.c
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -1449,8 +1449,7 @@ wait:if (ftdi->disconnected > 0) {
 			command->length = 0x8007;
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 8;
 			command->value = 0;
 			command->buffer = urb->setup_packet;
@@ -1514,8 +1513,7 @@ wait:if (ftdi->disconnected > 0) {
 							    1);
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 0;
 			command->value = 0;
 			command->buffer = NULL;
@@ -1571,8 +1569,7 @@ wait:if (ftdi->disconnected > 0) {
 			command->length = 0x0000;
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 0;
 			command->value = 0;
 			command->buffer = NULL;
@@ -1634,8 +1631,7 @@ wait:if (ftdi->disconnected > 0) {
 			command->header = 0x81 | (ed << 5);
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = min_t(u32, 1024,
 						 urb->transfer_buffer_length -
 						 urb->actual_length);
@@ -1715,8 +1711,7 @@ wait:if (ftdi->disconnected > 0) {
 							    1);
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 0;
 			command->value = 0;
 			command->buffer = NULL;
diff --git a/drivers/usb/misc/lvstest.c b/drivers/usb/misc/lvstest.c
index f8686139d6f3..25ec5666a75e 100644
--- a/drivers/usb/misc/lvstest.c
+++ b/drivers/usb/misc/lvstest.c
@@ -437,7 +437,7 @@ static int lvs_rh_probe(struct usb_interface *intf,
 	INIT_WORK(&lvs->rh_work, lvs_rh_work);
 
 	pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(hdev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(hdev, pipe);
 	usb_fill_int_urb(lvs->urb, hdev, pipe, &lvs->buffer[0], maxp,
 			lvs_rh_irq, lvs, endpoint->bInterval);
 
diff --git a/drivers/usb/storage/onetouch.c b/drivers/usb/storage/onetouch.c
index a989fe930e21..1db2eefeea22 100644
--- a/drivers/usb/storage/onetouch.c
+++ b/drivers/usb/storage/onetouch.c
@@ -180,7 +180,7 @@ static int onetouch_connect_input(struct us_data *ss)
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = min(maxp, ONETOUCH_PKT_LEN);
 
 	onetouch = kzalloc(sizeof(struct usb_onetouch), GFP_KERNEL);
diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index 1928b3918242..64d96d210e02 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -363,7 +363,7 @@ static int usb_stor_intr_transfer(struct us_data *us, void *buf,
 	usb_stor_dbg(us, "xfer %u bytes\n", length);
 
 	/* calculate the max packet size */
-	maxp = usb_maxpacket(us->pusb_dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(us->pusb_dev, pipe);
 	if (maxp > length)
 		maxp = length;
 
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 200b7b79acb5..2ebab87bf867 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1969,30 +1969,11 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
 	return eps[usb_pipeendpoint(pipe)];
 }
 
-/*-------------------------------------------------------------------------*/
-
-static inline __u16
-usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
+static inline u16 usb_maxpacket(struct usb_device *dev, int pipe)
 {
-	struct usb_host_endpoint	*ep;
-	unsigned			epnum = usb_pipeendpoint(pipe);
-
-	if (is_out) {
-		WARN_ON(usb_pipein(pipe));
-		ep = udev->ep_out[epnum];
-	} else {
-		WARN_ON(usb_pipeout(pipe));
-		ep = udev->ep_in[epnum];
-	}
-	if (!ep)
-		return 0;
-
-	/* NOTE:  only 0x07ff bits are for packet size... */
-	return usb_endpoint_maxp(&ep->desc);
+	return usb_endpoint_maxp(&usb_pipe_endpoint(dev, pipe)->desc);
 }
 
-/* ----------------------------------------------------------------------- */
-
 /* translate USB error codes to codes user space understands */
 static inline int usb_translate_errors(int error_code)
 {
diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c
index fdbdfb7bce92..6a4af725aedd 100644
--- a/sound/usb/line6/pcm.c
+++ b/sound/usb/line6/pcm.c
@@ -552,10 +552,10 @@ int line6_init_pcm(struct usb_line6 *line6,
 
 	line6pcm->max_packet_size_in =
 		usb_maxpacket(line6->usbdev,
-			usb_rcvisocpipe(line6->usbdev, ep_read), 0);
+			usb_rcvisocpipe(line6->usbdev, ep_read));
 	line6pcm->max_packet_size_out =
 		usb_maxpacket(line6->usbdev,
-			usb_sndisocpipe(line6->usbdev, ep_write), 1);
+			usb_sndisocpipe(line6->usbdev, ep_write));
 	if (!line6pcm->max_packet_size_in || !line6pcm->max_packet_size_out) {
 		dev_err(line6pcm->line6->ifcdev,
 			"cannot get proper max packet size\n");
diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index 2c01649c70f6..fba498f9e7dc 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -1285,7 +1285,7 @@ static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi *umidi,
 		pipe = usb_rcvintpipe(umidi->dev, ep_info->in_ep);
 	else
 		pipe = usb_rcvbulkpipe(umidi->dev, ep_info->in_ep);
-	length = usb_maxpacket(umidi->dev, pipe, 0);
+	length = usb_maxpacket(umidi->dev, pipe);
 	for (i = 0; i < INPUT_URBS; ++i) {
 		buffer = usb_alloc_coherent(umidi->dev, length, GFP_KERNEL,
 					    &ep->urbs[i]->transfer_dma);
@@ -1374,7 +1374,7 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi *umidi,
 		pipe = usb_sndbulkpipe(umidi->dev, ep_info->out_ep);
 	switch (umidi->usb_id) {
 	default:
-		ep->max_transfer = usb_maxpacket(umidi->dev, pipe, 1);
+		ep->max_transfer = usb_maxpacket(umidi->dev, pipe);
 		break;
 		/*
 		 * Various chips declare a packet size larger than 4 bytes, but
diff --git a/sound/usb/usx2y/usb_stream.c b/sound/usb/usx2y/usb_stream.c
index 9d0e44793896..a4d32e8a1d36 100644
--- a/sound/usb/usx2y/usb_stream.c
+++ b/sound/usb/usx2y/usb_stream.c
@@ -51,7 +51,7 @@ static int init_pipe_urbs(struct usb_stream_kernel *sk,
 {
 	int u, p;
 	int maxpacket = use_packsize ?
-		use_packsize : usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+		use_packsize : usb_maxpacket(dev, pipe);
 	int transfer_length = maxpacket * sk->n_o_ps;
 
 	for (u = 0; u < USB_STREAM_NURBS;
@@ -171,7 +171,7 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
 	out_pipe = usb_sndisocpipe(dev, out_endpoint);
 
 	max_packsize = use_packsize ?
-		use_packsize : usb_maxpacket(dev, in_pipe, 0);
+		use_packsize : usb_maxpacket(dev, in_pipe);
 
 	/*
 		t_period = period_frames / sample_rate
@@ -187,7 +187,7 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
 	read_size += packets * USB_STREAM_URBDEPTH *
 		(max_packsize + sizeof(struct usb_stream_packet));
 
-	max_packsize = usb_maxpacket(dev, out_pipe, 1);
+	max_packsize = usb_maxpacket(dev, out_pipe);
 	write_size = max_packsize * packets * USB_STREAM_URBDEPTH;
 
 	if (read_size >= 256*PAGE_SIZE || write_size >= 256*PAGE_SIZE) {
diff --git a/sound/usb/usx2y/usbusx2yaudio.c b/sound/usb/usx2y/usbusx2yaudio.c
index cfc1ea53978d..9cd5e3aae4f7 100644
--- a/sound/usb/usx2y/usbusx2yaudio.c
+++ b/sound/usb/usx2y/usbusx2yaudio.c
@@ -421,7 +421,7 @@ static int usx2y_urbs_allocate(struct snd_usx2y_substream *subs)
 
 	pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
 			usb_rcvisocpipe(dev, subs->endpoint);
-	subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
+	subs->maxpacksize = usb_maxpacket(dev, pipe);
 	if (!subs->maxpacksize)
 		return -EINVAL;
 
diff --git a/sound/usb/usx2y/usx2yhwdeppcm.c b/sound/usb/usx2y/usx2yhwdeppcm.c
index db83522c1b49..240349b644f3 100644
--- a/sound/usb/usx2y/usx2yhwdeppcm.c
+++ b/sound/usb/usx2y/usx2yhwdeppcm.c
@@ -321,7 +321,7 @@ static int usx2y_usbpcm_urbs_allocate(struct snd_usx2y_substream *subs)
 
 	pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
 			usb_rcvisocpipe(dev, subs->endpoint);
-	subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
+	subs->maxpacksize = usb_maxpacket(dev, pipe);
 	if (!subs->maxpacksize)
 		return -EINVAL;
 
-- 
2.34.1

Re: [PATCH] usb: rework usb_maxpacket() and remove its third argument

[Greg Kroah-Hartman]

On Fri, Mar 04, 2022 at 07:53:50PM +0900, Vincent Mailhol wrote:
> Change the prototype of usb_maxpacket() from:
> | static inline __u16
> | usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
> 
> into:
> | static inline u16 usb_maxpacket(struct usb_device *dev, int pipe)
> 
> and rewrite the function.
> 
> Rationale:
> 
>   * The third argument of usb_maxpacket(): is_out can be derived from
>     its second one: pipe using usb_pipeout(pipe). Furthermore,
>     usb_pipoout(pipe) is being called within usb_maxpacket()
>     regardless to confirm the input.
> 
>   * This function is not exposed to the UAPI so return type should be
>     u16, not __u16.
> 
>   * Let's not reinvent the wheel and rely on usb_endpoint_maxp() to
>     make this a one liner function.
> 
> All the users of usb_endpoint_maxp() are then updated.
> 
> Two of the users: oxu210hp-hcd.c and isp1760-hcd.c rely on a local
> macro: max_packet() to mask the maximum size. Because this masking is
> already performed by usb_maxpacket(), this patch also removes these
> redundant sanitization and remove the local macro if not needed any
> more (keep it in oxu210hp-hcd.c which uses it elsewhere but remove it
> in isp1760-hcd.c).

This type of "change all callers of this function" is brutal to do like
this, as is evident by the number of people you had to cc: here.

How about doing it the normal way.  Create a new function, with the
proper options you wish to see be used, and then move everyone over to
it, and when that is done, remove the old function.  Bonus points for
doing this with some crazy macros to keep the old name in the end (it
can be done, but I don't recommend it for the faint-of-heart, so it's
not required.)

thanks,

greg k-h

Re: [PATCH] usb: rework usb_maxpacket() and remove its third argument

[Vincent MAILHOL]

<Removed people in CC>

On Fri. 4 Mar. 2022 at 23:20, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
> On Fri, Mar 04, 2022 at 07:53:50PM +0900, Vincent Mailhol wrote:
> > Change the prototype of usb_maxpacket() from:
> > | static inline __u16
> > | usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
> >
> > into:
> > | static inline u16 usb_maxpacket(struct usb_device *dev, int pipe)
> >
> > and rewrite the function.
> >
> > Rationale:
> >
> >   * The third argument of usb_maxpacket(): is_out can be derived from
> >     its second one: pipe using usb_pipeout(pipe). Furthermore,
> >     usb_pipoout(pipe) is being called within usb_maxpacket()
> >     regardless to confirm the input.
> >
> >   * This function is not exposed to the UAPI so return type should be
> >     u16, not __u16.
> >
> >   * Let's not reinvent the wheel and rely on usb_endpoint_maxp() to
> >     make this a one liner function.
> >
> > All the users of usb_endpoint_maxp() are then updated.
> >
> > Two of the users: oxu210hp-hcd.c and isp1760-hcd.c rely on a local
> > macro: max_packet() to mask the maximum size. Because this masking is
> > already performed by usb_maxpacket(), this patch also removes these
> > redundant sanitization and remove the local macro if not needed any
> > more (keep it in oxu210hp-hcd.c which uses it elsewhere but remove it
> > in isp1760-hcd.c).
>
> This type of "change all callers of this function" is brutal to do like
> this, as is evident by the number of people you had to cc: here.
>
> How about doing it the normal way.  Create a new function, with the
> proper options you wish to see be used, and then move everyone over to
> it, and when that is done, remove the old function.  Bonus points for
> doing this with some crazy macros to keep the old name in the end (it
> can be done, but I don't recommend it for the faint-of-heart, so it's
> not required.)

Thank you for the explanation :)

If I understand correctly, I should:
  * First change linux/usb.h
  * Wait for other trees to pull the patch
  * Change the drivers
  * Clean up linux/usb.h

I did not find the inspiration for a better name so I would like to
keep the old one.
Would the below code meet your expectation of "doing some crazy macros"?

| static inline u16 __usb_maxpacket(struct usb_device *dev, int pipe)
| {
|     return usb_endpoint_maxp(&usb_pipe_endpoint(dev, pipe)->desc);
| }
|
| #define usb_maxpacket(dev, pipe, deprecated...) __usb_maxpacket(dev, pipe)

Thank you,


Yours sincerely,
Vincent Mailhol

Re: [PATCH] usb: rework usb_maxpacket() and remove its third argument

[Greg Kroah-Hartman]

On Sat, Mar 05, 2022 at 02:23:46AM +0900, Vincent MAILHOL wrote:
> <Removed people in CC>
> 
> On Fri. 4 Mar. 2022 at 23:20, Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> > On Fri, Mar 04, 2022 at 07:53:50PM +0900, Vincent Mailhol wrote:
> > > Change the prototype of usb_maxpacket() from:
> > > | static inline __u16
> > > | usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
> > >
> > > into:
> > > | static inline u16 usb_maxpacket(struct usb_device *dev, int pipe)
> > >
> > > and rewrite the function.
> > >
> > > Rationale:
> > >
> > >   * The third argument of usb_maxpacket(): is_out can be derived from
> > >     its second one: pipe using usb_pipeout(pipe). Furthermore,
> > >     usb_pipoout(pipe) is being called within usb_maxpacket()
> > >     regardless to confirm the input.
> > >
> > >   * This function is not exposed to the UAPI so return type should be
> > >     u16, not __u16.
> > >
> > >   * Let's not reinvent the wheel and rely on usb_endpoint_maxp() to
> > >     make this a one liner function.
> > >
> > > All the users of usb_endpoint_maxp() are then updated.
> > >
> > > Two of the users: oxu210hp-hcd.c and isp1760-hcd.c rely on a local
> > > macro: max_packet() to mask the maximum size. Because this masking is
> > > already performed by usb_maxpacket(), this patch also removes these
> > > redundant sanitization and remove the local macro if not needed any
> > > more (keep it in oxu210hp-hcd.c which uses it elsewhere but remove it
> > > in isp1760-hcd.c).
> >
> > This type of "change all callers of this function" is brutal to do like
> > this, as is evident by the number of people you had to cc: here.
> >
> > How about doing it the normal way.  Create a new function, with the
> > proper options you wish to see be used, and then move everyone over to
> > it, and when that is done, remove the old function.  Bonus points for
> > doing this with some crazy macros to keep the old name in the end (it
> > can be done, but I don't recommend it for the faint-of-heart, so it's
> > not required.)
> 
> Thank you for the explanation :)
> 
> If I understand correctly, I should:
>   * First change linux/usb.h

Yes.

>   * Wait for other trees to pull the patch

Pull what?

>   * Change the drivers

You can fix up many of these at the same time in a patch series.  I can
take many of them in the USB tree as well if needed.

>   * Clean up linux/usb.h
> 
> I did not find the inspiration for a better name so I would like to
> keep the old one.
> Would the below code meet your expectation of "doing some crazy macros"?
> 
> | static inline u16 __usb_maxpacket(struct usb_device *dev, int pipe)
> | {
> |     return usb_endpoint_maxp(&usb_pipe_endpoint(dev, pipe)->desc);
> | }
> |
> | #define usb_maxpacket(dev, pipe, deprecated...) __usb_maxpacket(dev, pipe)

Yeah, as you are just dropping the last argument, that might be all that
is needed as this could be quite simpler than I was thinking.

Try it and see!

thanks,

greg k-h

[PATCH v2 00/10] usb: rework usb_maxpacket() and remove its third argument

[Vincent Mailhol]

This series rework usb_maxpacket() to change its prototype from:
| static inline __u16
| usb_maxpacket(struct usb_device *udev, int pipe, int is_out)

into:
| static inline u16 usb_maxpacket(struct usb_device *dev, int pipe)

and rewrite the function.

Rationale:

  * The third argument of usb_maxpacket(): is_out can be derived from
    its second one: pipe using usb_pipeout(pipe). Furthermore,
    usb_pipeout(pipe) is being called within usb_maxpacket()
    regardless to confirm the input.

  * This function is not exposed to the UAPI so return type should be
    u16, not __u16.

  * Let's not reinvent the wheel and rely on usb_endpoint_maxp() to
    make this a one liner function.

In order to do so, usb_maxpacket() is temporarily changed into a variadic
function to ignore its third argument.

The series goes as follow:

    * Patches 1 and 2: preparation, remove a redundant call to the
      local macro max_packet() in two drivers

    * Patch 3: reword usb_maxpacket() and make it variadic to
      accommodate during the migration

    * Patch 4 to 9: migrate all the users of usb_maxpacket() (one
      patch per tree)

    * Patch 10: remove the third argument of usb_maxpacket() now that
      everyone is migrated



** Changelog: **

  v1 -> v2:

    * v1 contained a single patch, split it into a series. c.f.:
    https://lore.kernel.org/linux-usb/YiIgGOkNntEiu78O@kroah.com/T/#m6d25529f1cab1332b45e3e24480d541963684446

Vincent Mailhol (10):
  usb: oxu210hp-hcd: remove redundant call to max_packet() macro
  usb: isp1760: remove redundant max_packet() macro
  usb: rework usb_maxpacket() and deprecate its third argument
  HID: usbhid: remove third argument of usb_maxpacket()
  Input: remove third argument of usb_maxpacket()
  media: remove third argument of usb_maxpacket()
  net: remove third argument of usb_maxpacket()
  usb: remove third argument of usb_maxpacket()
  sound: usb: remove third argument of usb_maxpacket()
  usb: remove third argument of usb_maxpacket()

 drivers/hid/usbhid/hid-core.c                 |  2 +-
 drivers/hid/usbhid/usbkbd.c                   |  2 +-
 drivers/hid/usbhid/usbmouse.c                 |  2 +-
 drivers/input/misc/ati_remote2.c              |  2 +-
 drivers/input/misc/cm109.c                    |  2 +-
 drivers/input/misc/powermate.c                |  2 +-
 drivers/input/misc/yealink.c                  |  2 +-
 drivers/input/tablet/acecad.c                 |  2 +-
 drivers/input/tablet/pegasus_notetaker.c      |  2 +-
 drivers/media/rc/ati_remote.c                 |  4 ++--
 drivers/media/rc/mceusb.c                     |  2 +-
 drivers/media/rc/streamzap.c                  |  2 +-
 drivers/media/rc/xbox_remote.c                |  2 +-
 drivers/media/usb/tm6000/tm6000-dvb.c         |  2 +-
 drivers/media/usb/tm6000/tm6000-input.c       |  2 +-
 drivers/media/usb/tm6000/tm6000-video.c       |  2 +-
 drivers/net/usb/cdc_ncm.c                     |  4 ++--
 drivers/net/usb/lan78xx.c                     |  4 ++--
 drivers/net/usb/rndis_host.c                  |  2 +-
 drivers/net/usb/usbnet.c                      |  4 ++--
 drivers/net/wireless/mediatek/mt76/usb.c      |  2 +-
 .../net/wireless/ralink/rt2x00/rt2x00usb.c    |  4 ++--
 drivers/usb/atm/usbatm.c                      |  2 +-
 drivers/usb/c67x00/c67x00-sched.c             |  4 ++--
 drivers/usb/core/hub.c                        |  2 +-
 drivers/usb/host/ehci-q.c                     |  4 ++--
 drivers/usb/host/fhci-hcd.c                   |  3 +--
 drivers/usb/host/fotg210-hcd.c                |  2 +-
 drivers/usb/host/isp116x-hcd.c                |  5 ++--
 drivers/usb/host/isp1362-hcd.c                |  6 ++---
 drivers/usb/host/max3421-hcd.c                |  6 ++---
 drivers/usb/host/ohci-hcd.c                   |  3 +--
 drivers/usb/host/oxu210hp-hcd.c               |  4 ++--
 drivers/usb/host/r8a66597-hcd.c               |  3 +--
 drivers/usb/host/sl811-hcd.c                  |  6 ++---
 drivers/usb/isp1760/isp1760-hcd.c             |  7 ++----
 drivers/usb/misc/ftdi-elan.c                  | 15 ++++--------
 drivers/usb/misc/lvstest.c                    |  2 +-
 drivers/usb/storage/onetouch.c                |  2 +-
 drivers/usb/storage/transport.c               |  2 +-
 include/linux/usb.h                           | 23 ++-----------------
 sound/usb/line6/pcm.c                         |  4 ++--
 sound/usb/midi.c                              |  4 ++--
 sound/usb/usx2y/usb_stream.c                  |  6 ++---
 sound/usb/usx2y/usbusx2yaudio.c               |  2 +-
 sound/usb/usx2y/usx2yhwdeppcm.c               |  2 +-
 46 files changed, 71 insertions(+), 102 deletions(-)

-- 
2.34.1

[PATCH v2 01/10] usb: oxu210hp-hcd: remove redundant call to max_packet() macro

[Vincent Mailhol]

The function usb_endpoint_maxp() (called by usb_maxpacket()) already
does the sanitazation of the USB endpoint max packet size. The call to
max_packet() does the same thing and is thus removed.

However, the macro max_packet() is kept because it is used elsewhere
in the file.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/usb/host/oxu210hp-hcd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index e82ff2a49672..b741670525e3 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -1685,7 +1685,7 @@ static struct list_head *qh_urb_transaction(struct oxu_hcd *oxu,
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, !is_input));
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
-- 
2.34.1

[PATCH v2 02/10] usb: isp1760: remove redundant max_packet() macro

[Vincent Mailhol]

The function usb_endpoint_maxp() (called by usb_maxpacket()) already
does the sanitazation of the USB endpoint max packet size. The call to
max_packet() does the same thing and is thus removed.

The macro max_packet() not being used anymore also gets removed.

CC: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/usb/isp1760/isp1760-hcd.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index 79d571f1429b..893becb077d3 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -1768,7 +1768,6 @@ static void qtd_list_free(struct list_head *qtd_list)
  * Packetize urb->transfer_buffer into list of packets of size wMaxPacketSize.
  * Also calculate the PID type (SETUP/IN/OUT) for each packet.
  */
-#define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
 static void packetize_urb(struct usb_hcd *hcd,
 		struct urb *urb, struct list_head *head, gfp_t flags)
 {
@@ -1809,8 +1808,8 @@ static void packetize_urb(struct usb_hcd *hcd,
 			packet_type = IN_PID;
 	}
 
-	maxpacketsize = max_packet(usb_maxpacket(urb->dev, urb->pipe,
-						usb_pipeout(urb->pipe)));
+	maxpacketsize = usb_maxpacket(urb->dev, urb->pipe,
+				      usb_pipeout(urb->pipe));
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
-- 
2.34.1

Re: [PATCH v2 02/10] usb: isp1760: remove redundant max_packet() macro

[Rui Miguel Silva]

Hi Vincent,
Thanks for the patch.

On Sun Mar 6, 2022 at 7:55 AM WET, Vincent Mailhol wrote:

> The function usb_endpoint_maxp() (called by usb_maxpacket()) already
> does the sanitazation of the USB endpoint max packet size. The call to
> max_packet() does the same thing and is thus removed.
>
> The macro max_packet() not being used anymore also gets removed.
>
> CC: Rui Miguel Silva <rui.silva@linaro.org>
> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>

Thanks for the cleanup, looks good to me.

Reviewed-by: Rui Miguel Silva <rui.silva@linaro.org>

Cheers,
     Rui
> ---
>  drivers/usb/isp1760/isp1760-hcd.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
> index 79d571f1429b..893becb077d3 100644
> --- a/drivers/usb/isp1760/isp1760-hcd.c
> +++ b/drivers/usb/isp1760/isp1760-hcd.c
> @@ -1768,7 +1768,6 @@ static void qtd_list_free(struct list_head *qtd_list)
>   * Packetize urb->transfer_buffer into list of packets of size wMaxPacketSize.
>   * Also calculate the PID type (SETUP/IN/OUT) for each packet.
>   */
> -#define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
>  static void packetize_urb(struct usb_hcd *hcd,
>  		struct urb *urb, struct list_head *head, gfp_t flags)
>  {
> @@ -1809,8 +1808,8 @@ static void packetize_urb(struct usb_hcd *hcd,
>  			packet_type = IN_PID;
>  	}
>  
> -	maxpacketsize = max_packet(usb_maxpacket(urb->dev, urb->pipe,
> -						usb_pipeout(urb->pipe)));
> +	maxpacketsize = usb_maxpacket(urb->dev, urb->pipe,
> +				      usb_pipeout(urb->pipe));
>  
>  	/*
>  	 * buffer gets wrapped in one or more qtds;
> -- 
> 2.34.1

[PATCH v2 03/10] usb: rework usb_maxpacket() and deprecate its third argument

[Vincent Mailhol]

This is a transitional patch with the goal of changing the prototype
of usb_maxpacket() from:
| static inline __u16
| usb_maxpacket(struct usb_device *udev, int pipe, int is_out)

into:
| static inline u16 usb_maxpacket(struct usb_device *dev, int pipe)

The third argument of usb_maxpacket(): is_out gets removed because it
can be derived from its second argument: pipe using
usb_pipeout(pipe). Furthermore, in the current version,
ubs_pipeout(pipe) is called regardless in order to sanitize the is_out
parameter.

In order to make a smooth change, we first deprecate the is_out
parameter by simply ignoring it (using a variadic function) and will
remove it latter, once all the callers get updated.

Finally, the body of the function is reworked in order not to reinvent
the wheel and just relies on the usb_pipe_endpoint() helper function
instead.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 include/linux/usb.h | 24 +++---------------------
 1 file changed, 3 insertions(+), 21 deletions(-)

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 200b7b79acb5..588aa7dc3d10 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1969,30 +1969,12 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
 	return eps[usb_pipeendpoint(pipe)];
 }
 
-/*-------------------------------------------------------------------------*/
-
-static inline __u16
-usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
+static inline u16 usb_maxpacket(struct usb_device *dev, int pipe,
+				/* int is_out deprecated */ ...)
 {
-	struct usb_host_endpoint	*ep;
-	unsigned			epnum = usb_pipeendpoint(pipe);
-
-	if (is_out) {
-		WARN_ON(usb_pipein(pipe));
-		ep = udev->ep_out[epnum];
-	} else {
-		WARN_ON(usb_pipeout(pipe));
-		ep = udev->ep_in[epnum];
-	}
-	if (!ep)
-		return 0;
-
-	/* NOTE:  only 0x07ff bits are for packet size... */
-	return usb_endpoint_maxp(&ep->desc);
+	return usb_endpoint_maxp(&usb_pipe_endpoint(dev, pipe)->desc);
 }
 
-/* ----------------------------------------------------------------------- */
-
 /* translate USB error codes to codes user space understands */
 static inline int usb_translate_errors(int error_code)
 {
-- 
2.34.1

Re: [PATCH v2 03/10] usb: rework usb_maxpacket() and deprecate its third argument

[Greg Kroah-Hartman]

On Sun, Mar 06, 2022 at 04:55:17PM +0900, Vincent Mailhol wrote:
> This is a transitional patch with the goal of changing the prototype
> of usb_maxpacket() from:
> | static inline __u16
> | usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
> 
> into:
> | static inline u16 usb_maxpacket(struct usb_device *dev, int pipe)
> 
> The third argument of usb_maxpacket(): is_out gets removed because it
> can be derived from its second argument: pipe using
> usb_pipeout(pipe). Furthermore, in the current version,
> ubs_pipeout(pipe) is called regardless in order to sanitize the is_out
> parameter.
> 
> In order to make a smooth change, we first deprecate the is_out
> parameter by simply ignoring it (using a variadic function) and will
> remove it latter, once all the callers get updated.
> 
> Finally, the body of the function is reworked in order not to reinvent
> the wheel and just relies on the usb_pipe_endpoint() helper function
> instead.
> 
> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
> ---
>  include/linux/usb.h | 24 +++---------------------
>  1 file changed, 3 insertions(+), 21 deletions(-)
> 
> diff --git a/include/linux/usb.h b/include/linux/usb.h
> index 200b7b79acb5..588aa7dc3d10 100644
> --- a/include/linux/usb.h
> +++ b/include/linux/usb.h
> @@ -1969,30 +1969,12 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
>  	return eps[usb_pipeendpoint(pipe)];
>  }
>  
> -/*-------------------------------------------------------------------------*/
> -
> -static inline __u16
> -usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
> +static inline u16 usb_maxpacket(struct usb_device *dev, int pipe,
> +				/* int is_out deprecated */ ...)

No need to change from udev->dev, right?

>  {
> -	struct usb_host_endpoint	*ep;
> -	unsigned			epnum = usb_pipeendpoint(pipe);
> -
> -	if (is_out) {
> -		WARN_ON(usb_pipein(pipe));
> -		ep = udev->ep_out[epnum];
> -	} else {
> -		WARN_ON(usb_pipeout(pipe));
> -		ep = udev->ep_in[epnum];
> -	}
> -	if (!ep)
> -		return 0;
> -
> -	/* NOTE:  only 0x07ff bits are for packet size... */
> -	return usb_endpoint_maxp(&ep->desc);
> +	return usb_endpoint_maxp(&usb_pipe_endpoint(dev, pipe)->desc);

The change to use usb_pipe_endpoint() can be done separately.

Let's make these in tiny steps so that we can easily roll things back if
things are not working.

thanks,

greg k-h

Re: [PATCH v2 03/10] usb: rework usb_maxpacket() and deprecate its third argument

[Vincent MAILHOL]

On Wed. 16 mars 2022 at 02:25, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
> On Sun, Mar 06, 2022 at 04:55:17PM +0900, Vincent Mailhol wrote:
> > This is a transitional patch with the goal of changing the prototype
> > of usb_maxpacket() from:
> > | static inline __u16
> > | usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
> >
> > into:
> > | static inline u16 usb_maxpacket(struct usb_device *dev, int pipe)
> >
> > The third argument of usb_maxpacket(): is_out gets removed because it
> > can be derived from its second argument: pipe using
> > usb_pipeout(pipe). Furthermore, in the current version,
> > ubs_pipeout(pipe) is called regardless in order to sanitize the is_out
> > parameter.
> >
> > In order to make a smooth change, we first deprecate the is_out
> > parameter by simply ignoring it (using a variadic function) and will
> > remove it latter, once all the callers get updated.
> >
> > Finally, the body of the function is reworked in order not to reinvent
> > the wheel and just relies on the usb_pipe_endpoint() helper function
> > instead.
> >
> > Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
> > ---
> >  include/linux/usb.h | 24 +++---------------------
> >  1 file changed, 3 insertions(+), 21 deletions(-)
> >
> > diff --git a/include/linux/usb.h b/include/linux/usb.h
> > index 200b7b79acb5..588aa7dc3d10 100644
> > --- a/include/linux/usb.h
> > +++ b/include/linux/usb.h
> > @@ -1969,30 +1969,12 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
> >       return eps[usb_pipeendpoint(pipe)];
> >  }
> >
> > -/*-------------------------------------------------------------------------*/
> > -
> > -static inline __u16
> > -usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
> > +static inline u16 usb_maxpacket(struct usb_device *dev, int pipe,
> > +                             /* int is_out deprecated */ ...)
>
> No need to change from udev->dev, right?

Right. The motivation of this change was to align with other functions
(the majority of the functions in linux/usb.h name it dev, not udev).
Comment taken, I will keep the udev name in v3.

> >  {
> > -     struct usb_host_endpoint        *ep;
> > -     unsigned                        epnum = usb_pipeendpoint(pipe);
> > -
> > -     if (is_out) {
> > -             WARN_ON(usb_pipein(pipe));
> > -             ep = udev->ep_out[epnum];
> > -     } else {
> > -             WARN_ON(usb_pipeout(pipe));
> > -             ep = udev->ep_in[epnum];
> > -     }
> > -     if (!ep)
> > -             return 0;
> > -
> > -     /* NOTE:  only 0x07ff bits are for packet size... */
> > -     return usb_endpoint_maxp(&ep->desc);
> > +     return usb_endpoint_maxp(&usb_pipe_endpoint(dev, pipe)->desc);
>
> The change to use usb_pipe_endpoint() can be done separately.
>
> Let's make these in tiny steps so that we can easily roll things back if
> things are not working.

ACK. I will respin the patch series as below:
  * Make usb_maxpacket variadic
  * Migrate the callers of usb_maxpacket()
  * Suppress the third argument of usb_maxpacket()
  * Change the body of usb_maxpacket() using usb_pipe_endpoint().


> thanks,
>
> greg k-h

[PATCH v2 04/10] HID: usbhid: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Jiri Kosina <jikos@kernel.org>
CC: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/hid/usbhid/hid-core.c | 2 +-
 drivers/hid/usbhid/usbkbd.c   | 2 +-
 drivers/hid/usbhid/usbmouse.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 54752c85604b..4490e2f7252a 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -387,7 +387,7 @@ static int hid_submit_ctrl(struct hid_device *hid)
 
 		usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
 		maxpacket = usb_maxpacket(hid_to_usb_dev(hid),
-					  usbhid->urbctrl->pipe, 0);
+					  usbhid->urbctrl->pipe);
 		len += (len == 0);	/* Don't allow 0-length reports */
 		len = round_up(len, maxpacket);
 		if (len > usbhid->bufsize)
diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c
index df02002066ce..b4b007c4beb6 100644
--- a/drivers/hid/usbhid/usbkbd.c
+++ b/drivers/hid/usbhid/usbkbd.c
@@ -279,7 +279,7 @@ static int usb_kbd_probe(struct usb_interface *iface,
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	kbd = kzalloc(sizeof(struct usb_kbd), GFP_KERNEL);
 	input_dev = input_allocate_device();
diff --git a/drivers/hid/usbhid/usbmouse.c b/drivers/hid/usbhid/usbmouse.c
index c89332017d5d..fb1d7d1f6999 100644
--- a/drivers/hid/usbhid/usbmouse.c
+++ b/drivers/hid/usbhid/usbmouse.c
@@ -123,7 +123,7 @@ static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_i
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);
 	input_dev = input_allocate_device();
-- 
2.34.1

[PATCH v2 05/10] Input: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Ville Syrjala <syrjala@sci.fi>
CC: Dmitry Torokhov <dmitry.torokhov@gmail.com>
CC: Henk Vergonet <Henk.Vergonet@gmail.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/input/misc/ati_remote2.c         | 2 +-
 drivers/input/misc/cm109.c               | 2 +-
 drivers/input/misc/powermate.c           | 2 +-
 drivers/input/misc/yealink.c             | 2 +-
 drivers/input/tablet/acecad.c            | 2 +-
 drivers/input/tablet/pegasus_notetaker.c | 2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/input/misc/ati_remote2.c b/drivers/input/misc/ati_remote2.c
index 8a36d78fed63..946bf75aa106 100644
--- a/drivers/input/misc/ati_remote2.c
+++ b/drivers/input/misc/ati_remote2.c
@@ -639,7 +639,7 @@ static int ati_remote2_urb_init(struct ati_remote2 *ar2)
 			return -ENOMEM;
 
 		pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress);
-		maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+		maxp = usb_maxpacket(udev, pipe);
 		maxp = maxp > 4 ? 4 : maxp;
 
 		usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp,
diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c
index f515fae465c3..728325a2d574 100644
--- a/drivers/input/misc/cm109.c
+++ b/drivers/input/misc/cm109.c
@@ -745,7 +745,7 @@ static int cm109_usb_probe(struct usb_interface *intf,
 
 	/* get a handle to the interrupt data pipe */
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	ret = usb_maxpacket(udev, pipe);
 	if (ret != USB_PKT_LEN)
 		dev_err(&intf->dev, "invalid payload size %d, expected %d\n",
 			ret, USB_PKT_LEN);
diff --git a/drivers/input/misc/powermate.c b/drivers/input/misc/powermate.c
index c4e0e1886061..c1c733a9cb89 100644
--- a/drivers/input/misc/powermate.c
+++ b/drivers/input/misc/powermate.c
@@ -374,7 +374,7 @@ static int powermate_probe(struct usb_interface *intf, const struct usb_device_i
 
 	/* get a handle to the interrupt data pipe */
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 
 	if (maxp < POWERMATE_PAYLOAD_SIZE_MIN || maxp > POWERMATE_PAYLOAD_SIZE_MAX) {
 		printk(KERN_WARNING "powermate: Expected payload of %d--%d bytes, found %d bytes!\n",
diff --git a/drivers/input/misc/yealink.c b/drivers/input/misc/yealink.c
index 8ab01c7601b1..69420781db30 100644
--- a/drivers/input/misc/yealink.c
+++ b/drivers/input/misc/yealink.c
@@ -905,7 +905,7 @@ static int usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
 
 	/* get a handle to the interrupt data pipe */
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	ret = usb_maxpacket(udev, pipe);
 	if (ret != USB_PKT_LEN)
 		dev_err(&intf->dev, "invalid payload size %d, expected %zd\n",
 			ret, USB_PKT_LEN);
diff --git a/drivers/input/tablet/acecad.c b/drivers/input/tablet/acecad.c
index a38d1fe97334..56c7e471ac32 100644
--- a/drivers/input/tablet/acecad.c
+++ b/drivers/input/tablet/acecad.c
@@ -130,7 +130,7 @@ static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
 	input_dev = input_allocate_device();
diff --git a/drivers/input/tablet/pegasus_notetaker.c b/drivers/input/tablet/pegasus_notetaker.c
index 749edbdb7ffa..c608ac505d1b 100644
--- a/drivers/input/tablet/pegasus_notetaker.c
+++ b/drivers/input/tablet/pegasus_notetaker.c
@@ -296,7 +296,7 @@ static int pegasus_probe(struct usb_interface *intf,
 	pegasus->intf = intf;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	pegasus->data_len = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	pegasus->data_len = usb_maxpacket(dev, pipe);
 
 	pegasus->data = usb_alloc_coherent(dev, pegasus->data_len, GFP_KERNEL,
 					   &pegasus->data_dma);
-- 
2.34.1

[PATCH v2 06/10] media: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Sean Young <sean@mess.org>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: Benjamin Valentin <benpicco@googlemail.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/media/rc/ati_remote.c           | 4 ++--
 drivers/media/rc/mceusb.c               | 2 +-
 drivers/media/rc/streamzap.c            | 2 +-
 drivers/media/rc/xbox_remote.c          | 2 +-
 drivers/media/usb/tm6000/tm6000-dvb.c   | 2 +-
 drivers/media/usb/tm6000/tm6000-input.c | 2 +-
 drivers/media/usb/tm6000/tm6000-video.c | 2 +-
 7 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/media/rc/ati_remote.c b/drivers/media/rc/ati_remote.c
index c12dda73cdd5..3155e876616d 100644
--- a/drivers/media/rc/ati_remote.c
+++ b/drivers/media/rc/ati_remote.c
@@ -773,7 +773,7 @@ static int ati_remote_initialize(struct ati_remote *ati_remote)
 
 	/* Set up irq_urb */
 	pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
 
 	usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf,
@@ -784,7 +784,7 @@ static int ati_remote_initialize(struct ati_remote *ati_remote)
 
 	/* Set up out_urb */
 	pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
 
 	usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf,
diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
index 2dc810f5a73f..0834d5f866fd 100644
--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -1728,7 +1728,7 @@ static int mceusb_dev_probe(struct usb_interface *intf,
 		pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
 	else
 		pipe = usb_rcvbulkpipe(dev, ep_in->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
 	if (!ir)
diff --git a/drivers/media/rc/streamzap.c b/drivers/media/rc/streamzap.c
index 16ba85d7c090..deb85330c940 100644
--- a/drivers/media/rc/streamzap.c
+++ b/drivers/media/rc/streamzap.c
@@ -307,7 +307,7 @@ static int streamzap_probe(struct usb_interface *intf,
 	}
 
 	pipe = usb_rcvintpipe(usbdev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(usbdev, pipe);
 
 	if (maxp == 0) {
 		dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n",
diff --git a/drivers/media/rc/xbox_remote.c b/drivers/media/rc/xbox_remote.c
index 98d0b43608ad..7424b2031152 100644
--- a/drivers/media/rc/xbox_remote.c
+++ b/drivers/media/rc/xbox_remote.c
@@ -171,7 +171,7 @@ static int xbox_remote_initialize(struct xbox_remote *xbox_remote,
 
 	/* Set up irq_urb */
 	pipe = usb_rcvintpipe(udev, endpoint_in->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
 
 	usb_fill_int_urb(xbox_remote->irq_urb, udev, pipe, xbox_remote->inbuf,
diff --git a/drivers/media/usb/tm6000/tm6000-dvb.c b/drivers/media/usb/tm6000/tm6000-dvb.c
index 4990fa886d7a..335f747b0375 100644
--- a/drivers/media/usb/tm6000/tm6000-dvb.c
+++ b/drivers/media/usb/tm6000/tm6000-dvb.c
@@ -120,7 +120,7 @@ static int tm6000_start_stream(struct tm6000_core *dev)
 	pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
 							  & USB_ENDPOINT_NUMBER_MASK);
 
-	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	size = usb_maxpacket(dev->udev, pipe);
 	size = size * 15; /* 512 x 8 or 12 or 15 */
 
 	dvb->bulk_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
diff --git a/drivers/media/usb/tm6000/tm6000-input.c b/drivers/media/usb/tm6000/tm6000-input.c
index 84602edf3fe8..5136e9e202f1 100644
--- a/drivers/media/usb/tm6000/tm6000-input.c
+++ b/drivers/media/usb/tm6000/tm6000-input.c
@@ -340,7 +340,7 @@ static int __tm6000_ir_int_start(struct rc_dev *rc)
 		dev->int_in.endp->desc.bEndpointAddress
 		& USB_ENDPOINT_NUMBER_MASK);
 
-	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	size = usb_maxpacket(dev->udev, pipe);
 	dprintk(1, "IR max size: %d\n", size);
 
 	ir->int_urb->transfer_buffer = kzalloc(size, GFP_ATOMIC);
diff --git a/drivers/media/usb/tm6000/tm6000-video.c b/drivers/media/usb/tm6000/tm6000-video.c
index e293f6f3d1bc..d855a19551f3 100644
--- a/drivers/media/usb/tm6000/tm6000-video.c
+++ b/drivers/media/usb/tm6000/tm6000-video.c
@@ -570,7 +570,7 @@ static int tm6000_prepare_isoc(struct tm6000_core *dev)
 			       dev->isoc_in.endp->desc.bEndpointAddress &
 			       USB_ENDPOINT_NUMBER_MASK);
 
-	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	size = usb_maxpacket(dev->udev, pipe);
 
 	if (size > dev->isoc_in.maxsize)
 		size = dev->isoc_in.maxsize;
-- 
2.34.1

[PATCH v2 07/10] net: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Oliver Neukum <oliver@neukum.org>
CC: David S. Miller <davem@davemloft.net>
CC: Jakub Kicinski <kuba@kernel.org>
CC: Woojung Huh <woojung.huh@microchip.com>
CC: Felix Fietkau <nbd@nbd.name>
CC: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
CC: Ryder Lee <ryder.lee@mediatek.com>
CC: Kalle Valo <kvalo@kernel.org>
CC: Matthias Brugger <matthias.bgg@gmail.com>
CC: Stanislaw Gruszka <stf_xl@wp.pl>
CC: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/net/usb/cdc_ncm.c                      | 4 ++--
 drivers/net/usb/lan78xx.c                      | 4 ++--
 drivers/net/usb/rndis_host.c                   | 2 +-
 drivers/net/usb/usbnet.c                       | 4 ++--
 drivers/net/wireless/mediatek/mt76/usb.c       | 2 +-
 drivers/net/wireless/ralink/rt2x00/rt2x00usb.c | 4 ++--
 6 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 15f91d691bba..63ce9d81f61b 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -441,7 +441,7 @@ static void cdc_ncm_update_rxtx_max(struct usbnet *dev, u32 new_rx, u32 new_tx)
 	 * .bind which is called before usbnet sets up dev->maxpacket
 	 */
 	if (val != le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize) &&
-	    val % usb_maxpacket(dev->udev, dev->out, 1) == 0)
+	    val % usb_maxpacket(dev->udev, dev->out) == 0)
 		val++;
 
 	/* we might need to flush any pending tx buffers if running */
@@ -465,7 +465,7 @@ static void cdc_ncm_update_rxtx_max(struct usbnet *dev, u32 new_rx, u32 new_tx)
 	usbnet_update_max_qlen(dev);
 
 	/* never pad more than 3 full USB packets per transfer */
-	ctx->min_tx_pkt = clamp_t(u16, ctx->tx_max - 3 * usb_maxpacket(dev->udev, dev->out, 1),
+	ctx->min_tx_pkt = clamp_t(u16, ctx->tx_max - 3 * usb_maxpacket(dev->udev, dev->out),
 				  CDC_NCM_MIN_TX_PKT, ctx->tx_max);
 }
 
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index b8e20a3f2b84..7d35b683e005 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -4426,7 +4426,7 @@ static int lan78xx_probe(struct usb_interface *intf,
 		goto out4;
 
 	period = ep_intr->desc.bInterval;
-	maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0);
+	maxp = usb_maxpacket(dev->udev, dev->pipe_intr);
 	buf = kmalloc(maxp, GFP_KERNEL);
 	if (!buf) {
 		ret = -ENOMEM;
@@ -4444,7 +4444,7 @@ static int lan78xx_probe(struct usb_interface *intf,
 		dev->urb_intr->transfer_flags |= URB_FREE_BUFFER;
 	}
 
-	dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1);
+	dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out);
 
 	/* Reject broken descriptors. */
 	if (dev->maxpacket == 0) {
diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
index 247f58cb0f84..de0b00bd2eca 100644
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c
@@ -333,7 +333,7 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
 	net->hard_header_len += sizeof (struct rndis_data_hdr);
 	dev->hard_mtu = net->mtu + net->hard_header_len;
 
-	dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1);
+	dev->maxpacket = usb_maxpacket(dev->udev, dev->out);
 	if (dev->maxpacket == 0) {
 		netif_dbg(dev, probe, dev->net,
 			  "dev->maxpacket can't be 0\n");
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 9a6450f796dc..d5bf5733b277 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -229,7 +229,7 @@ static int init_status (struct usbnet *dev, struct usb_interface *intf)
 	pipe = usb_rcvintpipe (dev->udev,
 			dev->status->desc.bEndpointAddress
 				& USB_ENDPOINT_NUMBER_MASK);
-	maxp = usb_maxpacket (dev->udev, pipe, 0);
+	maxp = usb_maxpacket(dev->udev, pipe);
 
 	/* avoid 1 msec chatter:  min 8 msec poll rate */
 	period = max ((int) dev->status->desc.bInterval,
@@ -1789,7 +1789,7 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 
 	if (!dev->rx_urb_size)
 		dev->rx_urb_size = dev->hard_mtu;
-	dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
+	dev->maxpacket = usb_maxpacket(dev->udev, dev->out);
 	if (dev->maxpacket == 0) {
 		/* that is a broken device */
 		status = -ENODEV;
diff --git a/drivers/net/wireless/mediatek/mt76/usb.c b/drivers/net/wireless/mediatek/mt76/usb.c
index 0a7006c8959b..f84ea6996352 100644
--- a/drivers/net/wireless/mediatek/mt76/usb.c
+++ b/drivers/net/wireless/mediatek/mt76/usb.c
@@ -1132,7 +1132,7 @@ int mt76u_init(struct mt76_dev *dev,
 
 	INIT_WORK(&usb->stat_work, mt76u_tx_status_data);
 
-	usb->data_len = usb_maxpacket(udev, usb_sndctrlpipe(udev, 0), 1);
+	usb->data_len = usb_maxpacket(udev, usb_sndctrlpipe(udev, 0));
 	if (usb->data_len < 32)
 		usb->data_len = 32;
 
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
index 74c3d8cb3100..0827bc860bf8 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
@@ -586,10 +586,10 @@ static void rt2x00usb_assign_endpoint(struct data_queue *queue,
 
 	if (queue->qid == QID_RX) {
 		pipe = usb_rcvbulkpipe(usb_dev, queue->usb_endpoint);
-		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe, 0);
+		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe);
 	} else {
 		pipe = usb_sndbulkpipe(usb_dev, queue->usb_endpoint);
-		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe, 1);
+		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe);
 	}
 
 	if (!queue->usb_maxpacket)
-- 
2.34.1

[PATCH v2 08/10] usb: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Duncan Sands <duncan.sands@free.fr>
CC: Alan Stern <stern@rowland.harvard.edu>
CC: Olav Kongas <ok@artecdesign.ee>
CC: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/usb/atm/usbatm.c          |  2 +-
 drivers/usb/c67x00/c67x00-sched.c |  4 ++--
 drivers/usb/core/hub.c            |  2 +-
 drivers/usb/host/ehci-q.c         |  4 ++--
 drivers/usb/host/fhci-hcd.c       |  3 +--
 drivers/usb/host/fotg210-hcd.c    |  2 +-
 drivers/usb/host/isp116x-hcd.c    |  5 ++---
 drivers/usb/host/isp1362-hcd.c    |  6 +++---
 drivers/usb/host/max3421-hcd.c    |  6 +++---
 drivers/usb/host/ohci-hcd.c       |  3 +--
 drivers/usb/host/oxu210hp-hcd.c   |  4 ++--
 drivers/usb/host/r8a66597-hcd.c   |  3 +--
 drivers/usb/host/sl811-hcd.c      |  6 +++---
 drivers/usb/isp1760/isp1760-hcd.c |  6 ++----
 drivers/usb/misc/ftdi-elan.c      | 15 +++++----------
 drivers/usb/misc/lvstest.c        |  2 +-
 drivers/usb/storage/onetouch.c    |  2 +-
 drivers/usb/storage/transport.c   |  2 +-
 18 files changed, 33 insertions(+), 44 deletions(-)

diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index e3a49d837609..362217189ef3 100644
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -1091,7 +1091,7 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
 			snd_buf_bytes - (snd_buf_bytes % instance->tx_channel.stride));
 
 	/* rx buffer size must be a positive multiple of the endpoint maxpacket */
-	maxpacket = usb_maxpacket(usb_dev, instance->rx_channel.endpoint, 0);
+	maxpacket = usb_maxpacket(usb_dev, instance->rx_channel.endpoint);
 
 	if ((maxpacket < 1) || (maxpacket > UDSL_MAX_BUF_SIZE)) {
 		dev_err(dev, "%s: invalid endpoint %02x!\n", __func__,
diff --git a/drivers/usb/c67x00/c67x00-sched.c b/drivers/usb/c67x00/c67x00-sched.c
index c7d3e907be81..a09fa68a6ce7 100644
--- a/drivers/usb/c67x00/c67x00-sched.c
+++ b/drivers/usb/c67x00/c67x00-sched.c
@@ -655,7 +655,7 @@ static int c67x00_add_data_urb(struct c67x00_hcd *c67x00, struct urb *urb)
 			       usb_pipeout(urb->pipe));
 	remaining = urb->transfer_buffer_length - urb->actual_length;
 
-	maxps = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
+	maxps = usb_maxpacket(urb->dev, urb->pipe);
 
 	need_empty = (urb->transfer_flags & URB_ZERO_PACKET) &&
 	    usb_pipeout(urb->pipe) && !(remaining % maxps);
@@ -866,7 +866,7 @@ static inline int c67x00_end_of_data(struct c67x00_td *td)
 	if (unlikely(!act_bytes))
 		return 1;	/* This was an empty packet */
 
-	maxps = usb_maxpacket(td_udev(td), td->pipe, usb_pipeout(td->pipe));
+	maxps = usb_maxpacket(td_udev(td), td->pipe);
 
 	if (unlikely(act_bytes < maxps))
 		return 1;	/* Smaller then full packet */
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 1460857026e0..7781b2d31473 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1635,7 +1635,7 @@ static int hub_configure(struct usb_hub *hub,
 	 * maxpktsize is defined in hcd.c's fake endpoint descriptors
 	 * to be big enough for at least USB_MAXCHILDREN ports. */
 	pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(hdev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(hdev, pipe);
 
 	if (maxp > sizeof(*hub->buffer))
 		maxp = sizeof(*hub->buffer);
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index a2a5c2996350..1163af6fad77 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -645,7 +645,7 @@ qh_urb_transaction (
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
@@ -1218,7 +1218,7 @@ static int ehci_submit_single_step_set_feature(
 
 	token |= (1 /* "in" */ << 8);  /*This is IN stage*/
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, 0);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	qtd_fill(ehci, qtd, buf, len, token, maxpacket);
 
diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
index a8e1048278d0..2ba09c3fbc2f 100644
--- a/drivers/usb/host/fhci-hcd.c
+++ b/drivers/usb/host/fhci-hcd.c
@@ -408,8 +408,7 @@ static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 			size++;
 		else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
 			 && (urb->transfer_buffer_length
-			     % usb_maxpacket(urb->dev, pipe,
-					     usb_pipeout(pipe))) != 0)
+			     % usb_maxpacket(urb->dev, pipe)) != 0)
 			size++;
 		break;
 	case PIPE_ISOCHRONOUS:
diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index c3fd375b4778..f8c111e08a0d 100644
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -2596,7 +2596,7 @@ static struct list_head *qh_urb_transaction(struct fotg210_hcd *fotg210,
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index 8835f6bd528e..70ce03d01435 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -726,7 +726,7 @@ static int isp116x_urb_enqueue(struct usb_hcd *hcd,
 		INIT_LIST_HEAD(&ep->schedule);
 		ep->udev = udev;
 		ep->epnum = epnum;
-		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe);
 		usb_settoggle(udev, epnum, is_out, 0);
 
 		if (type == PIPE_CONTROL) {
@@ -757,8 +757,7 @@ static int isp116x_urb_enqueue(struct usb_hcd *hcd,
 			ep->load = usb_calc_bus_time(udev->speed,
 						     !is_out,
 						     (type == PIPE_ISOCHRONOUS),
-						     usb_maxpacket(udev, pipe,
-								   is_out)) /
+						     usb_maxpacket(udev, pipe)) /
 			    1000;
 		}
 		hep->hcpriv = ep;
diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c
index d8610ce8f2ec..0e14d1d07709 100644
--- a/drivers/usb/host/isp1362-hcd.c
+++ b/drivers/usb/host/isp1362-hcd.c
@@ -1279,7 +1279,7 @@ static int isp1362_urb_enqueue(struct usb_hcd *hcd,
 		ep->udev = usb_get_dev(udev);
 		ep->hep = hep;
 		ep->epnum = epnum;
-		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe);
 		ep->ptd_offset = -EINVAL;
 		ep->ptd_index = -EINVAL;
 		usb_settoggle(udev, epnum, is_out, 0);
@@ -1299,8 +1299,8 @@ static int isp1362_urb_enqueue(struct usb_hcd *hcd,
 			ep->interval = urb->interval;
 			ep->branch = PERIODIC_SIZE;
 			ep->load = usb_calc_bus_time(udev->speed, !is_out,
-						     (type == PIPE_ISOCHRONOUS),
-						     usb_maxpacket(udev, pipe, is_out)) / 1000;
+						     type == PIPE_ISOCHRONOUS,
+						     usb_maxpacket(udev, pipe)) / 1000;
 			break;
 		}
 		hep->hcpriv = ep;
diff --git a/drivers/usb/host/max3421-hcd.c b/drivers/usb/host/max3421-hcd.c
index 30de85a707fe..3a48f544dcdf 100644
--- a/drivers/usb/host/max3421-hcd.c
+++ b/drivers/usb/host/max3421-hcd.c
@@ -546,7 +546,7 @@ max3421_transfer_out(struct usb_hcd *hcd, struct urb *urb, int fast_retransmit)
 		return MAX3421_HXFR_BULK_OUT(epnum);
 	}
 
-	max_packet = usb_maxpacket(urb->dev, urb->pipe, 1);
+	max_packet = usb_maxpacket(urb->dev, urb->pipe);
 
 	if (max_packet > MAX3421_FIFO_SIZE) {
 		/*
@@ -952,7 +952,7 @@ max3421_transfer_in_done(struct usb_hcd *hcd, struct urb *urb)
 	 * USB 2.0 Section 5.3.2 Pipes: packets must be full size
 	 * except for last one.
 	 */
-	max_packet = usb_maxpacket(urb->dev, urb->pipe, 0);
+	max_packet = usb_maxpacket(urb->dev, urb->pipe);
 	if (max_packet > MAX3421_FIFO_SIZE) {
 		/*
 		 * We do not support isochronous transfers at this
@@ -998,7 +998,7 @@ max3421_transfer_out_done(struct usb_hcd *hcd, struct urb *urb)
 		 * max_packet as an indicator that the end of the
 		 * packet has been reached).
 		 */
-		u32 max_packet = usb_maxpacket(urb->dev, urb->pipe, 1);
+		u32 max_packet = usb_maxpacket(urb->dev, urb->pipe);
 
 		if (max3421_hcd->curr_len == max_packet)
 			return 0;
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 666b1c665188..c4c821c2288c 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -181,8 +181,7 @@ static int ohci_urb_enqueue (
 				size++;
 			else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
 				&& (urb->transfer_buffer_length
-					% usb_maxpacket (urb->dev, pipe,
-						usb_pipeout (pipe))) == 0)
+					% usb_maxpacket(urb->dev, pipe)) == 0)
 				size++;
 			break;
 		case PIPE_ISOCHRONOUS: /* number of packets from URB */
diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index b741670525e3..aaedf55d3c62 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -1685,7 +1685,7 @@ static struct list_head *qh_urb_transaction(struct oxu_hcd *oxu,
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
@@ -1796,7 +1796,7 @@ static struct ehci_qh *qh_make(struct oxu_hcd *oxu,
 
 	is_input = usb_pipein(urb->pipe);
 	type = usb_pipetype(urb->pipe);
-	maxp = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxp = usb_maxpacket(urb->dev, urb->pipe);
 
 	/* Compute interrupt scheduling parameters just once, and save.
 	 * - allowing for high bandwidth, how many nsec/uframe are used?
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 63719cdf6a4e..abb88dd40d4e 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -1867,8 +1867,7 @@ static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
 	td->pipe = hep->hcpriv;
 	td->urb = urb;
 	td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
-	td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
-				      !usb_pipein(urb->pipe));
+	td->maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 	if (usb_pipecontrol(urb->pipe))
 		td->type = USB_PID_SETUP;
 	else if (usb_pipein(urb->pipe))
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 85623731a516..d206bd95c7bb 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -842,7 +842,7 @@ static int sl811h_urb_enqueue(
 		INIT_LIST_HEAD(&ep->schedule);
 		ep->udev = udev;
 		ep->epnum = epnum;
-		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe);
 		ep->defctrl = SL11H_HCTLMASK_ARM | SL11H_HCTLMASK_ENABLE;
 		usb_settoggle(udev, epnum, is_out, 0);
 
@@ -878,8 +878,8 @@ static int sl811h_urb_enqueue(
 			if (type == PIPE_ISOCHRONOUS)
 				ep->defctrl |= SL11H_HCTLMASK_ISOCH;
 			ep->load = usb_calc_bus_time(udev->speed, !is_out,
-				(type == PIPE_ISOCHRONOUS),
-				usb_maxpacket(udev, pipe, is_out))
+						     type == PIPE_ISOCHRONOUS,
+						     usb_maxpacket(udev, pipe))
 					/ 1000;
 			break;
 		}
diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index 893becb077d3..76862ba40f35 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -825,8 +825,7 @@ static void create_ptd_atl(struct isp1760_qh *qh,
 	memset(ptd, 0, sizeof(*ptd));
 
 	/* according to 3.6.2, max packet len can not be > 0x400 */
-	maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe,
-						usb_pipeout(qtd->urb->pipe));
+	maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe);
 	multi =  1 + ((maxpacket >> 11) & 0x3);
 	maxpacket &= 0x7ff;
 
@@ -1808,8 +1807,7 @@ static void packetize_urb(struct usb_hcd *hcd,
 			packet_type = IN_PID;
 	}
 
-	maxpacketsize = usb_maxpacket(urb->dev, urb->pipe,
-				      usb_pipeout(urb->pipe));
+	maxpacketsize = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
index 6c38c62d29b2..b2f980409d0b 100644
--- a/drivers/usb/misc/ftdi-elan.c
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -1449,8 +1449,7 @@ wait:if (ftdi->disconnected > 0) {
 			command->length = 0x8007;
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 8;
 			command->value = 0;
 			command->buffer = urb->setup_packet;
@@ -1514,8 +1513,7 @@ wait:if (ftdi->disconnected > 0) {
 							    1);
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 0;
 			command->value = 0;
 			command->buffer = NULL;
@@ -1571,8 +1569,7 @@ wait:if (ftdi->disconnected > 0) {
 			command->length = 0x0000;
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 0;
 			command->value = 0;
 			command->buffer = NULL;
@@ -1634,8 +1631,7 @@ wait:if (ftdi->disconnected > 0) {
 			command->header = 0x81 | (ed << 5);
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = min_t(u32, 1024,
 						 urb->transfer_buffer_length -
 						 urb->actual_length);
@@ -1715,8 +1711,7 @@ wait:if (ftdi->disconnected > 0) {
 							    1);
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 0;
 			command->value = 0;
 			command->buffer = NULL;
diff --git a/drivers/usb/misc/lvstest.c b/drivers/usb/misc/lvstest.c
index f8686139d6f3..25ec5666a75e 100644
--- a/drivers/usb/misc/lvstest.c
+++ b/drivers/usb/misc/lvstest.c
@@ -437,7 +437,7 @@ static int lvs_rh_probe(struct usb_interface *intf,
 	INIT_WORK(&lvs->rh_work, lvs_rh_work);
 
 	pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(hdev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(hdev, pipe);
 	usb_fill_int_urb(lvs->urb, hdev, pipe, &lvs->buffer[0], maxp,
 			lvs_rh_irq, lvs, endpoint->bInterval);
 
diff --git a/drivers/usb/storage/onetouch.c b/drivers/usb/storage/onetouch.c
index a989fe930e21..1db2eefeea22 100644
--- a/drivers/usb/storage/onetouch.c
+++ b/drivers/usb/storage/onetouch.c
@@ -180,7 +180,7 @@ static int onetouch_connect_input(struct us_data *ss)
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = min(maxp, ONETOUCH_PKT_LEN);
 
 	onetouch = kzalloc(sizeof(struct usb_onetouch), GFP_KERNEL);
diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index 1928b3918242..64d96d210e02 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -363,7 +363,7 @@ static int usb_stor_intr_transfer(struct us_data *us, void *buf,
 	usb_stor_dbg(us, "xfer %u bytes\n", length);
 
 	/* calculate the max packet size */
-	maxp = usb_maxpacket(us->pusb_dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(us->pusb_dev, pipe);
 	if (maxp > length)
 		maxp = length;
 
-- 
2.34.1

[PATCH v2 09/10] sound: usb: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Jaroslav Kysela <perex@perex.cz>
CC: Takashi Iwai <tiwai@suse.com>
CC: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 sound/usb/line6/pcm.c           | 4 ++--
 sound/usb/midi.c                | 4 ++--
 sound/usb/usx2y/usb_stream.c    | 6 +++---
 sound/usb/usx2y/usbusx2yaudio.c | 2 +-
 sound/usb/usx2y/usx2yhwdeppcm.c | 2 +-
 5 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c
index fdbdfb7bce92..6a4af725aedd 100644
--- a/sound/usb/line6/pcm.c
+++ b/sound/usb/line6/pcm.c
@@ -552,10 +552,10 @@ int line6_init_pcm(struct usb_line6 *line6,
 
 	line6pcm->max_packet_size_in =
 		usb_maxpacket(line6->usbdev,
-			usb_rcvisocpipe(line6->usbdev, ep_read), 0);
+			usb_rcvisocpipe(line6->usbdev, ep_read));
 	line6pcm->max_packet_size_out =
 		usb_maxpacket(line6->usbdev,
-			usb_sndisocpipe(line6->usbdev, ep_write), 1);
+			usb_sndisocpipe(line6->usbdev, ep_write));
 	if (!line6pcm->max_packet_size_in || !line6pcm->max_packet_size_out) {
 		dev_err(line6pcm->line6->ifcdev,
 			"cannot get proper max packet size\n");
diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index 2c01649c70f6..fba498f9e7dc 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -1285,7 +1285,7 @@ static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi *umidi,
 		pipe = usb_rcvintpipe(umidi->dev, ep_info->in_ep);
 	else
 		pipe = usb_rcvbulkpipe(umidi->dev, ep_info->in_ep);
-	length = usb_maxpacket(umidi->dev, pipe, 0);
+	length = usb_maxpacket(umidi->dev, pipe);
 	for (i = 0; i < INPUT_URBS; ++i) {
 		buffer = usb_alloc_coherent(umidi->dev, length, GFP_KERNEL,
 					    &ep->urbs[i]->transfer_dma);
@@ -1374,7 +1374,7 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi *umidi,
 		pipe = usb_sndbulkpipe(umidi->dev, ep_info->out_ep);
 	switch (umidi->usb_id) {
 	default:
-		ep->max_transfer = usb_maxpacket(umidi->dev, pipe, 1);
+		ep->max_transfer = usb_maxpacket(umidi->dev, pipe);
 		break;
 		/*
 		 * Various chips declare a packet size larger than 4 bytes, but
diff --git a/sound/usb/usx2y/usb_stream.c b/sound/usb/usx2y/usb_stream.c
index 9d0e44793896..a4d32e8a1d36 100644
--- a/sound/usb/usx2y/usb_stream.c
+++ b/sound/usb/usx2y/usb_stream.c
@@ -51,7 +51,7 @@ static int init_pipe_urbs(struct usb_stream_kernel *sk,
 {
 	int u, p;
 	int maxpacket = use_packsize ?
-		use_packsize : usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+		use_packsize : usb_maxpacket(dev, pipe);
 	int transfer_length = maxpacket * sk->n_o_ps;
 
 	for (u = 0; u < USB_STREAM_NURBS;
@@ -171,7 +171,7 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
 	out_pipe = usb_sndisocpipe(dev, out_endpoint);
 
 	max_packsize = use_packsize ?
-		use_packsize : usb_maxpacket(dev, in_pipe, 0);
+		use_packsize : usb_maxpacket(dev, in_pipe);
 
 	/*
 		t_period = period_frames / sample_rate
@@ -187,7 +187,7 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
 	read_size += packets * USB_STREAM_URBDEPTH *
 		(max_packsize + sizeof(struct usb_stream_packet));
 
-	max_packsize = usb_maxpacket(dev, out_pipe, 1);
+	max_packsize = usb_maxpacket(dev, out_pipe);
 	write_size = max_packsize * packets * USB_STREAM_URBDEPTH;
 
 	if (read_size >= 256*PAGE_SIZE || write_size >= 256*PAGE_SIZE) {
diff --git a/sound/usb/usx2y/usbusx2yaudio.c b/sound/usb/usx2y/usbusx2yaudio.c
index cfc1ea53978d..9cd5e3aae4f7 100644
--- a/sound/usb/usx2y/usbusx2yaudio.c
+++ b/sound/usb/usx2y/usbusx2yaudio.c
@@ -421,7 +421,7 @@ static int usx2y_urbs_allocate(struct snd_usx2y_substream *subs)
 
 	pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
 			usb_rcvisocpipe(dev, subs->endpoint);
-	subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
+	subs->maxpacksize = usb_maxpacket(dev, pipe);
 	if (!subs->maxpacksize)
 		return -EINVAL;
 
diff --git a/sound/usb/usx2y/usx2yhwdeppcm.c b/sound/usb/usx2y/usx2yhwdeppcm.c
index db83522c1b49..240349b644f3 100644
--- a/sound/usb/usx2y/usx2yhwdeppcm.c
+++ b/sound/usb/usx2y/usx2yhwdeppcm.c
@@ -321,7 +321,7 @@ static int usx2y_usbpcm_urbs_allocate(struct snd_usx2y_substream *subs)
 
 	pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
 			usb_rcvisocpipe(dev, subs->endpoint);
-	subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
+	subs->maxpacksize = usb_maxpacket(dev, pipe);
 	if (!subs->maxpacksize)
 		return -EINVAL;
 
-- 
2.34.1

[PATCH v2 10/10] usb: remove third argument of usb_maxpacket()

[Vincent Mailhol]

Now that all users of usb_maxpacket() have been migrated to only use
two arguments, remove the third variadic argument which was introduced
for the transition.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 include/linux/usb.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 588aa7dc3d10..2ebab87bf867 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1969,8 +1969,7 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
 	return eps[usb_pipeendpoint(pipe)];
 }
 
-static inline u16 usb_maxpacket(struct usb_device *dev, int pipe,
-				/* int is_out deprecated */ ...)
+static inline u16 usb_maxpacket(struct usb_device *dev, int pipe)
 {
 	return usb_endpoint_maxp(&usb_pipe_endpoint(dev, pipe)->desc);
 }
-- 
2.34.1

[PATCH v3 0/9] usb: rework usb_maxpacket() and remove its third argument

[Vincent Mailhol]

This series rework usb_maxpacket() to change its prototype from:
| static inline __u16
| usb_maxpacket(struct usb_device *udev, int pipe, int is_out)

into:
| static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)

and rewrite the function.

Rationale:

  * The third argument of usb_maxpacket(): is_out can be derived from
    its second one: pipe using usb_pipeout(pipe). Furthermore,
    usb_pipeout(pipe) is being called within usb_maxpacket()
    regardless to confirm the input.

  * This function is not exposed to the UAPI so return type should be
    u16, not __u16.

  * Let's not reinvent the wheel and rely on usb_endpoint_maxp() to
    make this a one liner function.

In order to do so, usb_maxpacket() is temporarily changed into a variadic
function to ignore its third argument.

The series goes as follow:

    * Patch 1: make usb_maxpacket() variadic to accommodate during the
      migration

    * Patch 2 to 7: migrate all the users of usb_maxpacket() (one
      patch per tree)

    * Patch 8: remove the third argument of usb_maxpacket() now that
      everyone is migrated

    * Patch 9: fully rework usb_maxpacket()'s body using
      usb_pipe_endpoint()



** Changelog: **

  v2 -> v3:

    * remove patch 1 and 2 from the series because already applied to
      usb-testing.

    * split the change on usb_maxpacket in tiny steps:
       - a first patch to make the function variadic (patch 1 of this
         series)
       - a second one to remove the third argrument (patch 8 of this
         series)
       - a third and last one to fully rework the body and use
         usb_pipe_endpoint() (patch 9 of this series)

    * keep current variable names (do not rename usb_maxpacket
      parameter from udev to dev).

    c.f.:
    https://lore.kernel.org/linux-usb/YiIgGOkNntEiu78O@kroah.com/T/#m6a218544713670448c156ead95e72e8e1aa2373b


  v1 -> v2:

    * v1 contained a single patch, split it into a series. c.f.:
    https://lore.kernel.org/linux-usb/YiIgGOkNntEiu78O@kroah.com/T/#m6d25529f1cab1332b45e3e24480d541963684446


Vincent Mailhol (9):
  usb: deprecate the third argument of usb_maxpacket()
  HID: usbhid: remove third argument of usb_maxpacket()
  Input: remove third argument of usb_maxpacket()
  media: remove third argument of usb_maxpacket()
  net: remove third argument of usb_maxpacket()
  usb: remove third argument of usb_maxpacket()
  sound: usb: remove third argument of usb_maxpacket()
  usb: remove third argument of usb_maxpacket()
  usb: rework usb_maxpacket() using usb_pipe_endpoint()

 drivers/hid/usbhid/hid-core.c                 |  2 +-
 drivers/hid/usbhid/usbkbd.c                   |  2 +-
 drivers/hid/usbhid/usbmouse.c                 |  2 +-
 drivers/input/misc/ati_remote2.c              |  2 +-
 drivers/input/misc/cm109.c                    |  2 +-
 drivers/input/misc/powermate.c                |  2 +-
 drivers/input/misc/yealink.c                  |  2 +-
 drivers/input/tablet/acecad.c                 |  2 +-
 drivers/input/tablet/pegasus_notetaker.c      |  2 +-
 drivers/media/rc/ati_remote.c                 |  4 ++--
 drivers/media/rc/mceusb.c                     |  2 +-
 drivers/media/rc/streamzap.c                  |  2 +-
 drivers/media/rc/xbox_remote.c                |  2 +-
 drivers/media/usb/tm6000/tm6000-dvb.c         |  2 +-
 drivers/media/usb/tm6000/tm6000-input.c       |  2 +-
 drivers/media/usb/tm6000/tm6000-video.c       |  2 +-
 drivers/net/usb/cdc_ncm.c                     |  4 ++--
 drivers/net/usb/lan78xx.c                     |  4 ++--
 drivers/net/usb/rndis_host.c                  |  2 +-
 drivers/net/usb/usbnet.c                      |  4 ++--
 drivers/net/wireless/mediatek/mt76/usb.c      |  2 +-
 .../net/wireless/ralink/rt2x00/rt2x00usb.c    |  4 ++--
 drivers/usb/atm/usbatm.c                      |  2 +-
 drivers/usb/c67x00/c67x00-sched.c             |  4 ++--
 drivers/usb/core/hub.c                        |  2 +-
 drivers/usb/host/ehci-q.c                     |  4 ++--
 drivers/usb/host/fhci-hcd.c                   |  3 +--
 drivers/usb/host/fotg210-hcd.c                |  2 +-
 drivers/usb/host/isp116x-hcd.c                |  5 ++--
 drivers/usb/host/isp1362-hcd.c                |  6 ++---
 drivers/usb/host/max3421-hcd.c                |  6 ++---
 drivers/usb/host/ohci-hcd.c                   |  3 +--
 drivers/usb/host/oxu210hp-hcd.c               |  4 ++--
 drivers/usb/host/r8a66597-hcd.c               |  3 +--
 drivers/usb/host/sl811-hcd.c                  |  6 ++---
 drivers/usb/isp1760/isp1760-hcd.c             |  6 ++---
 drivers/usb/misc/ftdi-elan.c                  | 15 ++++--------
 drivers/usb/misc/lvstest.c                    |  2 +-
 drivers/usb/storage/onetouch.c                |  2 +-
 drivers/usb/storage/transport.c               |  2 +-
 include/linux/usb.h                           | 23 ++-----------------
 sound/usb/line6/pcm.c                         |  4 ++--
 sound/usb/midi.c                              |  4 ++--
 sound/usb/usx2y/usb_stream.c                  |  6 ++---
 sound/usb/usx2y/usbusx2yaudio.c               |  2 +-
 sound/usb/usx2y/usx2yhwdeppcm.c               |  2 +-
 46 files changed, 71 insertions(+), 101 deletions(-)

-- 
2.34.1

[PATCH v3 1/9] usb: deprecate the third argument of usb_maxpacket()

[Vincent Mailhol]

This is a transitional patch with the ultimate goal of changing the
prototype of usb_maxpacket() from:
| static inline __u16
| usb_maxpacket(struct usb_device *udev, int pipe, int is_out)

into:
| static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)

The third argument of usb_maxpacket(): is_out gets removed because it
can be derived from its second argument: pipe using
usb_pipeout(pipe). Furthermore, in the current version,
ubs_pipeout(pipe) is called regardless in order to sanitize the is_out
parameter.

In order to make a smooth change, we first deprecate the is_out
parameter by simply ignoring it (using a variadic function) and will
remove it later, once all the callers get updated.

The body of the function is reworked accordingly and is_out is
replaced by usb_pipeout(pipe). The WARN_ON() calls become unnecessary
and get removed.

Finally, the return type is changed from __u16 to u16 because this is
not a UAPI function.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 include/linux/usb.h | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 200b7b79acb5..572e136f6314 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1969,21 +1969,17 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
 	return eps[usb_pipeendpoint(pipe)];
 }
 
-/*-------------------------------------------------------------------------*/
-
-static inline __u16
-usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
+static inline u16 usb_maxpacket(struct usb_device *udev, int pipe,
+				/* int is_out deprecated */ ...)
 {
 	struct usb_host_endpoint	*ep;
 	unsigned			epnum = usb_pipeendpoint(pipe);
 
-	if (is_out) {
-		WARN_ON(usb_pipein(pipe));
+	if (usb_pipeout(pipe))
 		ep = udev->ep_out[epnum];
-	} else {
-		WARN_ON(usb_pipeout(pipe));
+	else
 		ep = udev->ep_in[epnum];
-	}
+
 	if (!ep)
 		return 0;
 
@@ -1991,8 +1987,6 @@ usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
 	return usb_endpoint_maxp(&ep->desc);
 }
 
-/* ----------------------------------------------------------------------- */
-
 /* translate USB error codes to codes user space understands */
 static inline int usb_translate_errors(int error_code)
 {
-- 
2.34.1

[PATCH v3 2/9] HID: usbhid: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Jiri Kosina <jikos@kernel.org>
CC: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/hid/usbhid/hid-core.c | 2 +-
 drivers/hid/usbhid/usbkbd.c   | 2 +-
 drivers/hid/usbhid/usbmouse.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 54752c85604b..4490e2f7252a 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -387,7 +387,7 @@ static int hid_submit_ctrl(struct hid_device *hid)
 
 		usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
 		maxpacket = usb_maxpacket(hid_to_usb_dev(hid),
-					  usbhid->urbctrl->pipe, 0);
+					  usbhid->urbctrl->pipe);
 		len += (len == 0);	/* Don't allow 0-length reports */
 		len = round_up(len, maxpacket);
 		if (len > usbhid->bufsize)
diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c
index df02002066ce..b4b007c4beb6 100644
--- a/drivers/hid/usbhid/usbkbd.c
+++ b/drivers/hid/usbhid/usbkbd.c
@@ -279,7 +279,7 @@ static int usb_kbd_probe(struct usb_interface *iface,
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	kbd = kzalloc(sizeof(struct usb_kbd), GFP_KERNEL);
 	input_dev = input_allocate_device();
diff --git a/drivers/hid/usbhid/usbmouse.c b/drivers/hid/usbhid/usbmouse.c
index c89332017d5d..fb1d7d1f6999 100644
--- a/drivers/hid/usbhid/usbmouse.c
+++ b/drivers/hid/usbhid/usbmouse.c
@@ -123,7 +123,7 @@ static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_i
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);
 	input_dev = input_allocate_device();
-- 
2.34.1

[PATCH v3 3/9] Input: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Ville Syrjala <syrjala@sci.fi>
CC: Dmitry Torokhov <dmitry.torokhov@gmail.com>
CC: Henk Vergonet <Henk.Vergonet@gmail.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/input/misc/ati_remote2.c         | 2 +-
 drivers/input/misc/cm109.c               | 2 +-
 drivers/input/misc/powermate.c           | 2 +-
 drivers/input/misc/yealink.c             | 2 +-
 drivers/input/tablet/acecad.c            | 2 +-
 drivers/input/tablet/pegasus_notetaker.c | 2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/input/misc/ati_remote2.c b/drivers/input/misc/ati_remote2.c
index 8a36d78fed63..946bf75aa106 100644
--- a/drivers/input/misc/ati_remote2.c
+++ b/drivers/input/misc/ati_remote2.c
@@ -639,7 +639,7 @@ static int ati_remote2_urb_init(struct ati_remote2 *ar2)
 			return -ENOMEM;
 
 		pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress);
-		maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+		maxp = usb_maxpacket(udev, pipe);
 		maxp = maxp > 4 ? 4 : maxp;
 
 		usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp,
diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c
index f515fae465c3..728325a2d574 100644
--- a/drivers/input/misc/cm109.c
+++ b/drivers/input/misc/cm109.c
@@ -745,7 +745,7 @@ static int cm109_usb_probe(struct usb_interface *intf,
 
 	/* get a handle to the interrupt data pipe */
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	ret = usb_maxpacket(udev, pipe);
 	if (ret != USB_PKT_LEN)
 		dev_err(&intf->dev, "invalid payload size %d, expected %d\n",
 			ret, USB_PKT_LEN);
diff --git a/drivers/input/misc/powermate.c b/drivers/input/misc/powermate.c
index c4e0e1886061..c1c733a9cb89 100644
--- a/drivers/input/misc/powermate.c
+++ b/drivers/input/misc/powermate.c
@@ -374,7 +374,7 @@ static int powermate_probe(struct usb_interface *intf, const struct usb_device_i
 
 	/* get a handle to the interrupt data pipe */
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 
 	if (maxp < POWERMATE_PAYLOAD_SIZE_MIN || maxp > POWERMATE_PAYLOAD_SIZE_MAX) {
 		printk(KERN_WARNING "powermate: Expected payload of %d--%d bytes, found %d bytes!\n",
diff --git a/drivers/input/misc/yealink.c b/drivers/input/misc/yealink.c
index 8ab01c7601b1..69420781db30 100644
--- a/drivers/input/misc/yealink.c
+++ b/drivers/input/misc/yealink.c
@@ -905,7 +905,7 @@ static int usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
 
 	/* get a handle to the interrupt data pipe */
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	ret = usb_maxpacket(udev, pipe);
 	if (ret != USB_PKT_LEN)
 		dev_err(&intf->dev, "invalid payload size %d, expected %zd\n",
 			ret, USB_PKT_LEN);
diff --git a/drivers/input/tablet/acecad.c b/drivers/input/tablet/acecad.c
index a38d1fe97334..56c7e471ac32 100644
--- a/drivers/input/tablet/acecad.c
+++ b/drivers/input/tablet/acecad.c
@@ -130,7 +130,7 @@ static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
 	input_dev = input_allocate_device();
diff --git a/drivers/input/tablet/pegasus_notetaker.c b/drivers/input/tablet/pegasus_notetaker.c
index 749edbdb7ffa..c608ac505d1b 100644
--- a/drivers/input/tablet/pegasus_notetaker.c
+++ b/drivers/input/tablet/pegasus_notetaker.c
@@ -296,7 +296,7 @@ static int pegasus_probe(struct usb_interface *intf,
 	pegasus->intf = intf;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	pegasus->data_len = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	pegasus->data_len = usb_maxpacket(dev, pipe);
 
 	pegasus->data = usb_alloc_coherent(dev, pegasus->data_len, GFP_KERNEL,
 					   &pegasus->data_dma);
-- 
2.34.1

[PATCH v3 4/9] media: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Sean Young <sean@mess.org>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: Benjamin Valentin <benpicco@googlemail.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/media/rc/ati_remote.c           | 4 ++--
 drivers/media/rc/mceusb.c               | 2 +-
 drivers/media/rc/streamzap.c            | 2 +-
 drivers/media/rc/xbox_remote.c          | 2 +-
 drivers/media/usb/tm6000/tm6000-dvb.c   | 2 +-
 drivers/media/usb/tm6000/tm6000-input.c | 2 +-
 drivers/media/usb/tm6000/tm6000-video.c | 2 +-
 7 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/media/rc/ati_remote.c b/drivers/media/rc/ati_remote.c
index c12dda73cdd5..3155e876616d 100644
--- a/drivers/media/rc/ati_remote.c
+++ b/drivers/media/rc/ati_remote.c
@@ -773,7 +773,7 @@ static int ati_remote_initialize(struct ati_remote *ati_remote)
 
 	/* Set up irq_urb */
 	pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
 
 	usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf,
@@ -784,7 +784,7 @@ static int ati_remote_initialize(struct ati_remote *ati_remote)
 
 	/* Set up out_urb */
 	pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
 
 	usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf,
diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
index 2dc810f5a73f..0834d5f866fd 100644
--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -1728,7 +1728,7 @@ static int mceusb_dev_probe(struct usb_interface *intf,
 		pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
 	else
 		pipe = usb_rcvbulkpipe(dev, ep_in->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
 	if (!ir)
diff --git a/drivers/media/rc/streamzap.c b/drivers/media/rc/streamzap.c
index 16ba85d7c090..deb85330c940 100644
--- a/drivers/media/rc/streamzap.c
+++ b/drivers/media/rc/streamzap.c
@@ -307,7 +307,7 @@ static int streamzap_probe(struct usb_interface *intf,
 	}
 
 	pipe = usb_rcvintpipe(usbdev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(usbdev, pipe);
 
 	if (maxp == 0) {
 		dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n",
diff --git a/drivers/media/rc/xbox_remote.c b/drivers/media/rc/xbox_remote.c
index 98d0b43608ad..7424b2031152 100644
--- a/drivers/media/rc/xbox_remote.c
+++ b/drivers/media/rc/xbox_remote.c
@@ -171,7 +171,7 @@ static int xbox_remote_initialize(struct xbox_remote *xbox_remote,
 
 	/* Set up irq_urb */
 	pipe = usb_rcvintpipe(udev, endpoint_in->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
 
 	usb_fill_int_urb(xbox_remote->irq_urb, udev, pipe, xbox_remote->inbuf,
diff --git a/drivers/media/usb/tm6000/tm6000-dvb.c b/drivers/media/usb/tm6000/tm6000-dvb.c
index 4990fa886d7a..335f747b0375 100644
--- a/drivers/media/usb/tm6000/tm6000-dvb.c
+++ b/drivers/media/usb/tm6000/tm6000-dvb.c
@@ -120,7 +120,7 @@ static int tm6000_start_stream(struct tm6000_core *dev)
 	pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
 							  & USB_ENDPOINT_NUMBER_MASK);
 
-	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	size = usb_maxpacket(dev->udev, pipe);
 	size = size * 15; /* 512 x 8 or 12 or 15 */
 
 	dvb->bulk_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
diff --git a/drivers/media/usb/tm6000/tm6000-input.c b/drivers/media/usb/tm6000/tm6000-input.c
index 84602edf3fe8..5136e9e202f1 100644
--- a/drivers/media/usb/tm6000/tm6000-input.c
+++ b/drivers/media/usb/tm6000/tm6000-input.c
@@ -340,7 +340,7 @@ static int __tm6000_ir_int_start(struct rc_dev *rc)
 		dev->int_in.endp->desc.bEndpointAddress
 		& USB_ENDPOINT_NUMBER_MASK);
 
-	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	size = usb_maxpacket(dev->udev, pipe);
 	dprintk(1, "IR max size: %d\n", size);
 
 	ir->int_urb->transfer_buffer = kzalloc(size, GFP_ATOMIC);
diff --git a/drivers/media/usb/tm6000/tm6000-video.c b/drivers/media/usb/tm6000/tm6000-video.c
index e293f6f3d1bc..d855a19551f3 100644
--- a/drivers/media/usb/tm6000/tm6000-video.c
+++ b/drivers/media/usb/tm6000/tm6000-video.c
@@ -570,7 +570,7 @@ static int tm6000_prepare_isoc(struct tm6000_core *dev)
 			       dev->isoc_in.endp->desc.bEndpointAddress &
 			       USB_ENDPOINT_NUMBER_MASK);
 
-	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	size = usb_maxpacket(dev->udev, pipe);
 
 	if (size > dev->isoc_in.maxsize)
 		size = dev->isoc_in.maxsize;
-- 
2.34.1

[PATCH v3 5/9] net: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Oliver Neukum <oliver@neukum.org>
CC: David S. Miller <davem@davemloft.net>
CC: Jakub Kicinski <kuba@kernel.org>
CC: Woojung Huh <woojung.huh@microchip.com>
CC: Felix Fietkau <nbd@nbd.name>
CC: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
CC: Ryder Lee <ryder.lee@mediatek.com>
CC: Kalle Valo <kvalo@kernel.org>
CC: Matthias Brugger <matthias.bgg@gmail.com>
CC: Stanislaw Gruszka <stf_xl@wp.pl>
CC: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/net/usb/cdc_ncm.c                      | 4 ++--
 drivers/net/usb/lan78xx.c                      | 4 ++--
 drivers/net/usb/rndis_host.c                   | 2 +-
 drivers/net/usb/usbnet.c                       | 4 ++--
 drivers/net/wireless/mediatek/mt76/usb.c       | 2 +-
 drivers/net/wireless/ralink/rt2x00/rt2x00usb.c | 4 ++--
 6 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 15f91d691bba..63ce9d81f61b 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -441,7 +441,7 @@ static void cdc_ncm_update_rxtx_max(struct usbnet *dev, u32 new_rx, u32 new_tx)
 	 * .bind which is called before usbnet sets up dev->maxpacket
 	 */
 	if (val != le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize) &&
-	    val % usb_maxpacket(dev->udev, dev->out, 1) == 0)
+	    val % usb_maxpacket(dev->udev, dev->out) == 0)
 		val++;
 
 	/* we might need to flush any pending tx buffers if running */
@@ -465,7 +465,7 @@ static void cdc_ncm_update_rxtx_max(struct usbnet *dev, u32 new_rx, u32 new_tx)
 	usbnet_update_max_qlen(dev);
 
 	/* never pad more than 3 full USB packets per transfer */
-	ctx->min_tx_pkt = clamp_t(u16, ctx->tx_max - 3 * usb_maxpacket(dev->udev, dev->out, 1),
+	ctx->min_tx_pkt = clamp_t(u16, ctx->tx_max - 3 * usb_maxpacket(dev->udev, dev->out),
 				  CDC_NCM_MIN_TX_PKT, ctx->tx_max);
 }
 
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index b8e20a3f2b84..7d35b683e005 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -4426,7 +4426,7 @@ static int lan78xx_probe(struct usb_interface *intf,
 		goto out4;
 
 	period = ep_intr->desc.bInterval;
-	maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0);
+	maxp = usb_maxpacket(dev->udev, dev->pipe_intr);
 	buf = kmalloc(maxp, GFP_KERNEL);
 	if (!buf) {
 		ret = -ENOMEM;
@@ -4444,7 +4444,7 @@ static int lan78xx_probe(struct usb_interface *intf,
 		dev->urb_intr->transfer_flags |= URB_FREE_BUFFER;
 	}
 
-	dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1);
+	dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out);
 
 	/* Reject broken descriptors. */
 	if (dev->maxpacket == 0) {
diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
index 247f58cb0f84..de0b00bd2eca 100644
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c
@@ -333,7 +333,7 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
 	net->hard_header_len += sizeof (struct rndis_data_hdr);
 	dev->hard_mtu = net->mtu + net->hard_header_len;
 
-	dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1);
+	dev->maxpacket = usb_maxpacket(dev->udev, dev->out);
 	if (dev->maxpacket == 0) {
 		netif_dbg(dev, probe, dev->net,
 			  "dev->maxpacket can't be 0\n");
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 9a6450f796dc..d5bf5733b277 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -229,7 +229,7 @@ static int init_status (struct usbnet *dev, struct usb_interface *intf)
 	pipe = usb_rcvintpipe (dev->udev,
 			dev->status->desc.bEndpointAddress
 				& USB_ENDPOINT_NUMBER_MASK);
-	maxp = usb_maxpacket (dev->udev, pipe, 0);
+	maxp = usb_maxpacket(dev->udev, pipe);
 
 	/* avoid 1 msec chatter:  min 8 msec poll rate */
 	period = max ((int) dev->status->desc.bInterval,
@@ -1789,7 +1789,7 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 
 	if (!dev->rx_urb_size)
 		dev->rx_urb_size = dev->hard_mtu;
-	dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
+	dev->maxpacket = usb_maxpacket(dev->udev, dev->out);
 	if (dev->maxpacket == 0) {
 		/* that is a broken device */
 		status = -ENODEV;
diff --git a/drivers/net/wireless/mediatek/mt76/usb.c b/drivers/net/wireless/mediatek/mt76/usb.c
index 0a7006c8959b..f84ea6996352 100644
--- a/drivers/net/wireless/mediatek/mt76/usb.c
+++ b/drivers/net/wireless/mediatek/mt76/usb.c
@@ -1132,7 +1132,7 @@ int mt76u_init(struct mt76_dev *dev,
 
 	INIT_WORK(&usb->stat_work, mt76u_tx_status_data);
 
-	usb->data_len = usb_maxpacket(udev, usb_sndctrlpipe(udev, 0), 1);
+	usb->data_len = usb_maxpacket(udev, usb_sndctrlpipe(udev, 0));
 	if (usb->data_len < 32)
 		usb->data_len = 32;
 
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
index 74c3d8cb3100..0827bc860bf8 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
@@ -586,10 +586,10 @@ static void rt2x00usb_assign_endpoint(struct data_queue *queue,
 
 	if (queue->qid == QID_RX) {
 		pipe = usb_rcvbulkpipe(usb_dev, queue->usb_endpoint);
-		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe, 0);
+		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe);
 	} else {
 		pipe = usb_sndbulkpipe(usb_dev, queue->usb_endpoint);
-		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe, 1);
+		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe);
 	}
 
 	if (!queue->usb_maxpacket)
-- 
2.34.1

[PATCH v3 6/9] usb: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Duncan Sands <duncan.sands@free.fr>
CC: Alan Stern <stern@rowland.harvard.edu>
CC: Olav Kongas <ok@artecdesign.ee>
CC: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/usb/atm/usbatm.c          |  2 +-
 drivers/usb/c67x00/c67x00-sched.c |  4 ++--
 drivers/usb/core/hub.c            |  2 +-
 drivers/usb/host/ehci-q.c         |  4 ++--
 drivers/usb/host/fhci-hcd.c       |  3 +--
 drivers/usb/host/fotg210-hcd.c    |  2 +-
 drivers/usb/host/isp116x-hcd.c    |  5 ++---
 drivers/usb/host/isp1362-hcd.c    |  6 +++---
 drivers/usb/host/max3421-hcd.c    |  6 +++---
 drivers/usb/host/ohci-hcd.c       |  3 +--
 drivers/usb/host/oxu210hp-hcd.c   |  4 ++--
 drivers/usb/host/r8a66597-hcd.c   |  3 +--
 drivers/usb/host/sl811-hcd.c      |  6 +++---
 drivers/usb/isp1760/isp1760-hcd.c |  6 ++----
 drivers/usb/misc/ftdi-elan.c      | 15 +++++----------
 drivers/usb/misc/lvstest.c        |  2 +-
 drivers/usb/storage/onetouch.c    |  2 +-
 drivers/usb/storage/transport.c   |  2 +-
 18 files changed, 33 insertions(+), 44 deletions(-)

diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index e3a49d837609..362217189ef3 100644
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -1091,7 +1091,7 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
 			snd_buf_bytes - (snd_buf_bytes % instance->tx_channel.stride));
 
 	/* rx buffer size must be a positive multiple of the endpoint maxpacket */
-	maxpacket = usb_maxpacket(usb_dev, instance->rx_channel.endpoint, 0);
+	maxpacket = usb_maxpacket(usb_dev, instance->rx_channel.endpoint);
 
 	if ((maxpacket < 1) || (maxpacket > UDSL_MAX_BUF_SIZE)) {
 		dev_err(dev, "%s: invalid endpoint %02x!\n", __func__,
diff --git a/drivers/usb/c67x00/c67x00-sched.c b/drivers/usb/c67x00/c67x00-sched.c
index c7d3e907be81..a09fa68a6ce7 100644
--- a/drivers/usb/c67x00/c67x00-sched.c
+++ b/drivers/usb/c67x00/c67x00-sched.c
@@ -655,7 +655,7 @@ static int c67x00_add_data_urb(struct c67x00_hcd *c67x00, struct urb *urb)
 			       usb_pipeout(urb->pipe));
 	remaining = urb->transfer_buffer_length - urb->actual_length;
 
-	maxps = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
+	maxps = usb_maxpacket(urb->dev, urb->pipe);
 
 	need_empty = (urb->transfer_flags & URB_ZERO_PACKET) &&
 	    usb_pipeout(urb->pipe) && !(remaining % maxps);
@@ -866,7 +866,7 @@ static inline int c67x00_end_of_data(struct c67x00_td *td)
 	if (unlikely(!act_bytes))
 		return 1;	/* This was an empty packet */
 
-	maxps = usb_maxpacket(td_udev(td), td->pipe, usb_pipeout(td->pipe));
+	maxps = usb_maxpacket(td_udev(td), td->pipe);
 
 	if (unlikely(act_bytes < maxps))
 		return 1;	/* Smaller then full packet */
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 1460857026e0..7781b2d31473 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1635,7 +1635,7 @@ static int hub_configure(struct usb_hub *hub,
 	 * maxpktsize is defined in hcd.c's fake endpoint descriptors
 	 * to be big enough for at least USB_MAXCHILDREN ports. */
 	pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(hdev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(hdev, pipe);
 
 	if (maxp > sizeof(*hub->buffer))
 		maxp = sizeof(*hub->buffer);
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index a2a5c2996350..1163af6fad77 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -645,7 +645,7 @@ qh_urb_transaction (
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
@@ -1218,7 +1218,7 @@ static int ehci_submit_single_step_set_feature(
 
 	token |= (1 /* "in" */ << 8);  /*This is IN stage*/
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, 0);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	qtd_fill(ehci, qtd, buf, len, token, maxpacket);
 
diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
index a8e1048278d0..2ba09c3fbc2f 100644
--- a/drivers/usb/host/fhci-hcd.c
+++ b/drivers/usb/host/fhci-hcd.c
@@ -408,8 +408,7 @@ static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 			size++;
 		else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
 			 && (urb->transfer_buffer_length
-			     % usb_maxpacket(urb->dev, pipe,
-					     usb_pipeout(pipe))) != 0)
+			     % usb_maxpacket(urb->dev, pipe)) != 0)
 			size++;
 		break;
 	case PIPE_ISOCHRONOUS:
diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index c3fd375b4778..f8c111e08a0d 100644
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -2596,7 +2596,7 @@ static struct list_head *qh_urb_transaction(struct fotg210_hcd *fotg210,
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index 8835f6bd528e..70ce03d01435 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -726,7 +726,7 @@ static int isp116x_urb_enqueue(struct usb_hcd *hcd,
 		INIT_LIST_HEAD(&ep->schedule);
 		ep->udev = udev;
 		ep->epnum = epnum;
-		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe);
 		usb_settoggle(udev, epnum, is_out, 0);
 
 		if (type == PIPE_CONTROL) {
@@ -757,8 +757,7 @@ static int isp116x_urb_enqueue(struct usb_hcd *hcd,
 			ep->load = usb_calc_bus_time(udev->speed,
 						     !is_out,
 						     (type == PIPE_ISOCHRONOUS),
-						     usb_maxpacket(udev, pipe,
-								   is_out)) /
+						     usb_maxpacket(udev, pipe)) /
 			    1000;
 		}
 		hep->hcpriv = ep;
diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c
index d8610ce8f2ec..0e14d1d07709 100644
--- a/drivers/usb/host/isp1362-hcd.c
+++ b/drivers/usb/host/isp1362-hcd.c
@@ -1279,7 +1279,7 @@ static int isp1362_urb_enqueue(struct usb_hcd *hcd,
 		ep->udev = usb_get_dev(udev);
 		ep->hep = hep;
 		ep->epnum = epnum;
-		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe);
 		ep->ptd_offset = -EINVAL;
 		ep->ptd_index = -EINVAL;
 		usb_settoggle(udev, epnum, is_out, 0);
@@ -1299,8 +1299,8 @@ static int isp1362_urb_enqueue(struct usb_hcd *hcd,
 			ep->interval = urb->interval;
 			ep->branch = PERIODIC_SIZE;
 			ep->load = usb_calc_bus_time(udev->speed, !is_out,
-						     (type == PIPE_ISOCHRONOUS),
-						     usb_maxpacket(udev, pipe, is_out)) / 1000;
+						     type == PIPE_ISOCHRONOUS,
+						     usb_maxpacket(udev, pipe)) / 1000;
 			break;
 		}
 		hep->hcpriv = ep;
diff --git a/drivers/usb/host/max3421-hcd.c b/drivers/usb/host/max3421-hcd.c
index 30de85a707fe..3a48f544dcdf 100644
--- a/drivers/usb/host/max3421-hcd.c
+++ b/drivers/usb/host/max3421-hcd.c
@@ -546,7 +546,7 @@ max3421_transfer_out(struct usb_hcd *hcd, struct urb *urb, int fast_retransmit)
 		return MAX3421_HXFR_BULK_OUT(epnum);
 	}
 
-	max_packet = usb_maxpacket(urb->dev, urb->pipe, 1);
+	max_packet = usb_maxpacket(urb->dev, urb->pipe);
 
 	if (max_packet > MAX3421_FIFO_SIZE) {
 		/*
@@ -952,7 +952,7 @@ max3421_transfer_in_done(struct usb_hcd *hcd, struct urb *urb)
 	 * USB 2.0 Section 5.3.2 Pipes: packets must be full size
 	 * except for last one.
 	 */
-	max_packet = usb_maxpacket(urb->dev, urb->pipe, 0);
+	max_packet = usb_maxpacket(urb->dev, urb->pipe);
 	if (max_packet > MAX3421_FIFO_SIZE) {
 		/*
 		 * We do not support isochronous transfers at this
@@ -998,7 +998,7 @@ max3421_transfer_out_done(struct usb_hcd *hcd, struct urb *urb)
 		 * max_packet as an indicator that the end of the
 		 * packet has been reached).
 		 */
-		u32 max_packet = usb_maxpacket(urb->dev, urb->pipe, 1);
+		u32 max_packet = usb_maxpacket(urb->dev, urb->pipe);
 
 		if (max3421_hcd->curr_len == max_packet)
 			return 0;
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 666b1c665188..c4c821c2288c 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -181,8 +181,7 @@ static int ohci_urb_enqueue (
 				size++;
 			else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
 				&& (urb->transfer_buffer_length
-					% usb_maxpacket (urb->dev, pipe,
-						usb_pipeout (pipe))) == 0)
+					% usb_maxpacket(urb->dev, pipe)) == 0)
 				size++;
 			break;
 		case PIPE_ISOCHRONOUS: /* number of packets from URB */
diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index b741670525e3..aaedf55d3c62 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -1685,7 +1685,7 @@ static struct list_head *qh_urb_transaction(struct oxu_hcd *oxu,
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
@@ -1796,7 +1796,7 @@ static struct ehci_qh *qh_make(struct oxu_hcd *oxu,
 
 	is_input = usb_pipein(urb->pipe);
 	type = usb_pipetype(urb->pipe);
-	maxp = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxp = usb_maxpacket(urb->dev, urb->pipe);
 
 	/* Compute interrupt scheduling parameters just once, and save.
 	 * - allowing for high bandwidth, how many nsec/uframe are used?
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 63719cdf6a4e..abb88dd40d4e 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -1867,8 +1867,7 @@ static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
 	td->pipe = hep->hcpriv;
 	td->urb = urb;
 	td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
-	td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
-				      !usb_pipein(urb->pipe));
+	td->maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 	if (usb_pipecontrol(urb->pipe))
 		td->type = USB_PID_SETUP;
 	else if (usb_pipein(urb->pipe))
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 85623731a516..d206bd95c7bb 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -842,7 +842,7 @@ static int sl811h_urb_enqueue(
 		INIT_LIST_HEAD(&ep->schedule);
 		ep->udev = udev;
 		ep->epnum = epnum;
-		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe);
 		ep->defctrl = SL11H_HCTLMASK_ARM | SL11H_HCTLMASK_ENABLE;
 		usb_settoggle(udev, epnum, is_out, 0);
 
@@ -878,8 +878,8 @@ static int sl811h_urb_enqueue(
 			if (type == PIPE_ISOCHRONOUS)
 				ep->defctrl |= SL11H_HCTLMASK_ISOCH;
 			ep->load = usb_calc_bus_time(udev->speed, !is_out,
-				(type == PIPE_ISOCHRONOUS),
-				usb_maxpacket(udev, pipe, is_out))
+						     type == PIPE_ISOCHRONOUS,
+						     usb_maxpacket(udev, pipe))
 					/ 1000;
 			break;
 		}
diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index 893becb077d3..76862ba40f35 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -825,8 +825,7 @@ static void create_ptd_atl(struct isp1760_qh *qh,
 	memset(ptd, 0, sizeof(*ptd));
 
 	/* according to 3.6.2, max packet len can not be > 0x400 */
-	maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe,
-						usb_pipeout(qtd->urb->pipe));
+	maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe);
 	multi =  1 + ((maxpacket >> 11) & 0x3);
 	maxpacket &= 0x7ff;
 
@@ -1808,8 +1807,7 @@ static void packetize_urb(struct usb_hcd *hcd,
 			packet_type = IN_PID;
 	}
 
-	maxpacketsize = usb_maxpacket(urb->dev, urb->pipe,
-				      usb_pipeout(urb->pipe));
+	maxpacketsize = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
index 6c38c62d29b2..b2f980409d0b 100644
--- a/drivers/usb/misc/ftdi-elan.c
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -1449,8 +1449,7 @@ wait:if (ftdi->disconnected > 0) {
 			command->length = 0x8007;
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 8;
 			command->value = 0;
 			command->buffer = urb->setup_packet;
@@ -1514,8 +1513,7 @@ wait:if (ftdi->disconnected > 0) {
 							    1);
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 0;
 			command->value = 0;
 			command->buffer = NULL;
@@ -1571,8 +1569,7 @@ wait:if (ftdi->disconnected > 0) {
 			command->length = 0x0000;
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 0;
 			command->value = 0;
 			command->buffer = NULL;
@@ -1634,8 +1631,7 @@ wait:if (ftdi->disconnected > 0) {
 			command->header = 0x81 | (ed << 5);
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = min_t(u32, 1024,
 						 urb->transfer_buffer_length -
 						 urb->actual_length);
@@ -1715,8 +1711,7 @@ wait:if (ftdi->disconnected > 0) {
 							    1);
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 0;
 			command->value = 0;
 			command->buffer = NULL;
diff --git a/drivers/usb/misc/lvstest.c b/drivers/usb/misc/lvstest.c
index f8686139d6f3..25ec5666a75e 100644
--- a/drivers/usb/misc/lvstest.c
+++ b/drivers/usb/misc/lvstest.c
@@ -437,7 +437,7 @@ static int lvs_rh_probe(struct usb_interface *intf,
 	INIT_WORK(&lvs->rh_work, lvs_rh_work);
 
 	pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(hdev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(hdev, pipe);
 	usb_fill_int_urb(lvs->urb, hdev, pipe, &lvs->buffer[0], maxp,
 			lvs_rh_irq, lvs, endpoint->bInterval);
 
diff --git a/drivers/usb/storage/onetouch.c b/drivers/usb/storage/onetouch.c
index a989fe930e21..1db2eefeea22 100644
--- a/drivers/usb/storage/onetouch.c
+++ b/drivers/usb/storage/onetouch.c
@@ -180,7 +180,7 @@ static int onetouch_connect_input(struct us_data *ss)
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = min(maxp, ONETOUCH_PKT_LEN);
 
 	onetouch = kzalloc(sizeof(struct usb_onetouch), GFP_KERNEL);
diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index 1928b3918242..64d96d210e02 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -363,7 +363,7 @@ static int usb_stor_intr_transfer(struct us_data *us, void *buf,
 	usb_stor_dbg(us, "xfer %u bytes\n", length);
 
 	/* calculate the max packet size */
-	maxp = usb_maxpacket(us->pusb_dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(us->pusb_dev, pipe);
 	if (maxp > length)
 		maxp = length;
 
-- 
2.34.1

[PATCH v3 7/9] sound: usb: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Jaroslav Kysela <perex@perex.cz>
CC: Takashi Iwai <tiwai@suse.com>
CC: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 sound/usb/line6/pcm.c           | 4 ++--
 sound/usb/midi.c                | 4 ++--
 sound/usb/usx2y/usb_stream.c    | 6 +++---
 sound/usb/usx2y/usbusx2yaudio.c | 2 +-
 sound/usb/usx2y/usx2yhwdeppcm.c | 2 +-
 5 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c
index fdbdfb7bce92..6a4af725aedd 100644
--- a/sound/usb/line6/pcm.c
+++ b/sound/usb/line6/pcm.c
@@ -552,10 +552,10 @@ int line6_init_pcm(struct usb_line6 *line6,
 
 	line6pcm->max_packet_size_in =
 		usb_maxpacket(line6->usbdev,
-			usb_rcvisocpipe(line6->usbdev, ep_read), 0);
+			usb_rcvisocpipe(line6->usbdev, ep_read));
 	line6pcm->max_packet_size_out =
 		usb_maxpacket(line6->usbdev,
-			usb_sndisocpipe(line6->usbdev, ep_write), 1);
+			usb_sndisocpipe(line6->usbdev, ep_write));
 	if (!line6pcm->max_packet_size_in || !line6pcm->max_packet_size_out) {
 		dev_err(line6pcm->line6->ifcdev,
 			"cannot get proper max packet size\n");
diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index 2c01649c70f6..fba498f9e7dc 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -1285,7 +1285,7 @@ static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi *umidi,
 		pipe = usb_rcvintpipe(umidi->dev, ep_info->in_ep);
 	else
 		pipe = usb_rcvbulkpipe(umidi->dev, ep_info->in_ep);
-	length = usb_maxpacket(umidi->dev, pipe, 0);
+	length = usb_maxpacket(umidi->dev, pipe);
 	for (i = 0; i < INPUT_URBS; ++i) {
 		buffer = usb_alloc_coherent(umidi->dev, length, GFP_KERNEL,
 					    &ep->urbs[i]->transfer_dma);
@@ -1374,7 +1374,7 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi *umidi,
 		pipe = usb_sndbulkpipe(umidi->dev, ep_info->out_ep);
 	switch (umidi->usb_id) {
 	default:
-		ep->max_transfer = usb_maxpacket(umidi->dev, pipe, 1);
+		ep->max_transfer = usb_maxpacket(umidi->dev, pipe);
 		break;
 		/*
 		 * Various chips declare a packet size larger than 4 bytes, but
diff --git a/sound/usb/usx2y/usb_stream.c b/sound/usb/usx2y/usb_stream.c
index 9d0e44793896..a4d32e8a1d36 100644
--- a/sound/usb/usx2y/usb_stream.c
+++ b/sound/usb/usx2y/usb_stream.c
@@ -51,7 +51,7 @@ static int init_pipe_urbs(struct usb_stream_kernel *sk,
 {
 	int u, p;
 	int maxpacket = use_packsize ?
-		use_packsize : usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+		use_packsize : usb_maxpacket(dev, pipe);
 	int transfer_length = maxpacket * sk->n_o_ps;
 
 	for (u = 0; u < USB_STREAM_NURBS;
@@ -171,7 +171,7 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
 	out_pipe = usb_sndisocpipe(dev, out_endpoint);
 
 	max_packsize = use_packsize ?
-		use_packsize : usb_maxpacket(dev, in_pipe, 0);
+		use_packsize : usb_maxpacket(dev, in_pipe);
 
 	/*
 		t_period = period_frames / sample_rate
@@ -187,7 +187,7 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
 	read_size += packets * USB_STREAM_URBDEPTH *
 		(max_packsize + sizeof(struct usb_stream_packet));
 
-	max_packsize = usb_maxpacket(dev, out_pipe, 1);
+	max_packsize = usb_maxpacket(dev, out_pipe);
 	write_size = max_packsize * packets * USB_STREAM_URBDEPTH;
 
 	if (read_size >= 256*PAGE_SIZE || write_size >= 256*PAGE_SIZE) {
diff --git a/sound/usb/usx2y/usbusx2yaudio.c b/sound/usb/usx2y/usbusx2yaudio.c
index cfc1ea53978d..9cd5e3aae4f7 100644
--- a/sound/usb/usx2y/usbusx2yaudio.c
+++ b/sound/usb/usx2y/usbusx2yaudio.c
@@ -421,7 +421,7 @@ static int usx2y_urbs_allocate(struct snd_usx2y_substream *subs)
 
 	pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
 			usb_rcvisocpipe(dev, subs->endpoint);
-	subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
+	subs->maxpacksize = usb_maxpacket(dev, pipe);
 	if (!subs->maxpacksize)
 		return -EINVAL;
 
diff --git a/sound/usb/usx2y/usx2yhwdeppcm.c b/sound/usb/usx2y/usx2yhwdeppcm.c
index db83522c1b49..240349b644f3 100644
--- a/sound/usb/usx2y/usx2yhwdeppcm.c
+++ b/sound/usb/usx2y/usx2yhwdeppcm.c
@@ -321,7 +321,7 @@ static int usx2y_usbpcm_urbs_allocate(struct snd_usx2y_substream *subs)
 
 	pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
 			usb_rcvisocpipe(dev, subs->endpoint);
-	subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
+	subs->maxpacksize = usb_maxpacket(dev, pipe);
 	if (!subs->maxpacksize)
 		return -EINVAL;
 
-- 
2.34.1

[PATCH v3 8/9] usb: remove third argument of usb_maxpacket()

[Vincent Mailhol]

Now that all users of usb_maxpacket() have been migrated to only use
two arguments, remove the third variadic argument which was introduced
for the transition.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 include/linux/usb.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 572e136f6314..8127782aa7a1 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1969,8 +1969,7 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
 	return eps[usb_pipeendpoint(pipe)];
 }
 
-static inline u16 usb_maxpacket(struct usb_device *udev, int pipe,
-				/* int is_out deprecated */ ...)
+static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)
 {
 	struct usb_host_endpoint	*ep;
 	unsigned			epnum = usb_pipeendpoint(pipe);
-- 
2.34.1

[PATCH v3 9/9] usb: rework usb_maxpacket() using usb_pipe_endpoint()

[Vincent Mailhol]

Rework the body of usb_maxpacket() in order not to reinvent the wheel
and just rely on the usb_pipe_endpoint() helper function instead.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 include/linux/usb.h | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 8127782aa7a1..653d34ff0999 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1971,19 +1971,7 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
 
 static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)
 {
-	struct usb_host_endpoint	*ep;
-	unsigned			epnum = usb_pipeendpoint(pipe);
-
-	if (usb_pipeout(pipe))
-		ep = udev->ep_out[epnum];
-	else
-		ep = udev->ep_in[epnum];
-
-	if (!ep)
-		return 0;
-
-	/* NOTE:  only 0x07ff bits are for packet size... */
-	return usb_endpoint_maxp(&ep->desc);
+	return usb_endpoint_maxp(&usb_pipe_endpoint(udev, pipe)->desc);
 }
 
 /* translate USB error codes to codes user space understands */
-- 
2.34.1

Re: [PATCH v3 9/9] usb: rework usb_maxpacket() using usb_pipe_endpoint()

[Alan Stern]

On Thu, Mar 17, 2022 at 01:19:35AM +0900, Vincent Mailhol wrote:
> Rework the body of usb_maxpacket() in order not to reinvent the wheel
> and just rely on the usb_pipe_endpoint() helper function instead.
> 
> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
> ---
>  include/linux/usb.h | 14 +-------------
>  1 file changed, 1 insertion(+), 13 deletions(-)
> 
> diff --git a/include/linux/usb.h b/include/linux/usb.h
> index 8127782aa7a1..653d34ff0999 100644
> --- a/include/linux/usb.h
> +++ b/include/linux/usb.h
> @@ -1971,19 +1971,7 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
>  
>  static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)
>  {
> -	struct usb_host_endpoint	*ep;
> -	unsigned			epnum = usb_pipeendpoint(pipe);
> -
> -	if (usb_pipeout(pipe))
> -		ep = udev->ep_out[epnum];
> -	else
> -		ep = udev->ep_in[epnum];
> -
> -	if (!ep)
> -		return 0;
> -
> -	/* NOTE:  only 0x07ff bits are for packet size... */
> -	return usb_endpoint_maxp(&ep->desc);
> +	return usb_endpoint_maxp(&usb_pipe_endpoint(udev, pipe)->desc);

The original code was careful to handle the case where ep was a NULL 
pointer.  What will your routine do if usb_pipe_endpoint(udev, pipe) 
returns NULL?

Alan Stern

>  }
>  
>  /* translate USB error codes to codes user space understands */
> -- 
> 2.34.1
> 

Re: [PATCH v3 9/9] usb: rework usb_maxpacket() using usb_pipe_endpoint()

[Vincent MAILHOL]

On Thu. 17 Mar 2022 at 02:17, Alan Stern <stern@rowland.harvard.edu> wrote:
> On Thu, Mar 17, 2022 at 01:19:35AM +0900, Vincent Mailhol wrote:
> > Rework the body of usb_maxpacket() in order not to reinvent the wheel
> > and just rely on the usb_pipe_endpoint() helper function instead.
> >
> > Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
> > ---
> >  include/linux/usb.h | 14 +-------------
> >  1 file changed, 1 insertion(+), 13 deletions(-)
> >
> > diff --git a/include/linux/usb.h b/include/linux/usb.h
> > index 8127782aa7a1..653d34ff0999 100644
> > --- a/include/linux/usb.h
> > +++ b/include/linux/usb.h
> > @@ -1971,19 +1971,7 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
> >
> >  static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)
> >  {
> > -     struct usb_host_endpoint        *ep;
> > -     unsigned                        epnum = usb_pipeendpoint(pipe);
> > -
> > -     if (usb_pipeout(pipe))
> > -             ep = udev->ep_out[epnum];
> > -     else
> > -             ep = udev->ep_in[epnum];
> > -
> > -     if (!ep)
> > -             return 0;
> > -
> > -     /* NOTE:  only 0x07ff bits are for packet size... */
> > -     return usb_endpoint_maxp(&ep->desc);
> > +     return usb_endpoint_maxp(&usb_pipe_endpoint(udev, pipe)->desc);
>
> The original code was careful to handle the case where ep was a NULL
> pointer.  What will your routine do if usb_pipe_endpoint(udev, pipe)
> returns NULL?

Sorry, you are absolutely right. Will send a v4.

Thank you!


Yours sincerely,
Vincent Maihol

[PATCH v4 0/9] usb: rework usb_maxpacket() and remove its third argument

[Vincent Mailhol]

This series rework usb_maxpacket() to change its prototype from:
| static inline __u16
| usb_maxpacket(struct usb_device *udev, int pipe, int is_out)

into:
| static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)

and rewrite the function using usb_pipe_endpoint().

Rationale:

  * The third argument of usb_maxpacket(): is_out can be derived from
    its second one: pipe using usb_pipeout(pipe). Furthermore,
    usb_pipeout(pipe) is being called within usb_maxpacket()
    regardless to confirm the input.

  * This function is not exposed to the UAPI so return type should be
    u16, not __u16.

  * usb_pipe_endpoint() (defined a couple of lines before) does most
    of the work. Use it instead of reimplementing the same thing
    again.

In order to do so, usb_maxpacket() is temporarily changed into a variadic
function to ignore its third argument.

The series goes as follow:

    * Patch 1: make usb_maxpacket() variadic to accommodate during the
      migration

    * Patch 2 to 7: migrate all the users of usb_maxpacket() (one
      patch per tree)

    * Patch 8: remove the third argument of usb_maxpacket() now that
      everyone is migrated

    * Patch 9: rework usb_maxpacket()'s body using usb_pipe_endpoint()



** Changelog: **

  v3 -> v4:

    * [Patch 9] check that the output of usb_pipe_endpoint() is not
      NULL.

  c.f.:
  https://lore.kernel.org/linux-usb/YiIgGOkNntEiu78O@kroah.com/T/#mb6f348628a0cdc104e6fb3b0d5212a71e60281e9


  v2 -> v3:

    * remove patch 1 and 2 from the series because already applied to
      usb-testing.

    * split the change on usb_maxpacket in tiny steps:
       - a first patch to make the function variadic (patch 1 of this
         series)
       - a second one to remove the third argrument (patch 8 of this
         series)
       - a third and last one to fully rework the body and use
         usb_pipe_endpoint() (patch 9 of this series)

    * keep current variable names (do not rename usb_maxpacket
      parameter from udev to dev).

    c.f.:
    https://lore.kernel.org/linux-usb/YiIgGOkNntEiu78O@kroah.com/T/#m6a218544713670448c156ead95e72e8e1aa2373b


  v1 -> v2:

    * v1 contained a single patch, split it into a series. c.f.:
    https://lore.kernel.org/linux-usb/YiIgGOkNntEiu78O@kroah.com/T/#m6d25529f1cab1332b45e3e24480d541963684446

Vincent Mailhol (9):
  usb: deprecate the third argument of usb_maxpacket()
  HID: usbhid: remove third argument of usb_maxpacket()
  Input: remove third argument of usb_maxpacket()
  media: remove third argument of usb_maxpacket()
  net: remove third argument of usb_maxpacket()
  usb: remove third argument of usb_maxpacket()
  sound: usb: remove third argument of usb_maxpacket()
  usb: remove third argument of usb_maxpacket()
  usb: rework usb_maxpacket() using usb_pipe_endpoint()

 drivers/hid/usbhid/hid-core.c                  |  2 +-
 drivers/hid/usbhid/usbkbd.c                    |  2 +-
 drivers/hid/usbhid/usbmouse.c                  |  2 +-
 drivers/input/misc/ati_remote2.c               |  2 +-
 drivers/input/misc/cm109.c                     |  2 +-
 drivers/input/misc/powermate.c                 |  2 +-
 drivers/input/misc/yealink.c                   |  2 +-
 drivers/input/tablet/acecad.c                  |  2 +-
 drivers/input/tablet/pegasus_notetaker.c       |  2 +-
 drivers/media/rc/ati_remote.c                  |  4 ++--
 drivers/media/rc/mceusb.c                      |  2 +-
 drivers/media/rc/streamzap.c                   |  2 +-
 drivers/media/rc/xbox_remote.c                 |  2 +-
 drivers/media/usb/tm6000/tm6000-dvb.c          |  2 +-
 drivers/media/usb/tm6000/tm6000-input.c        |  2 +-
 drivers/media/usb/tm6000/tm6000-video.c        |  2 +-
 drivers/net/usb/cdc_ncm.c                      |  4 ++--
 drivers/net/usb/lan78xx.c                      |  4 ++--
 drivers/net/usb/rndis_host.c                   |  2 +-
 drivers/net/usb/usbnet.c                       |  4 ++--
 drivers/net/wireless/mediatek/mt76/usb.c       |  2 +-
 drivers/net/wireless/ralink/rt2x00/rt2x00usb.c |  4 ++--
 drivers/usb/atm/usbatm.c                       |  2 +-
 drivers/usb/c67x00/c67x00-sched.c              |  4 ++--
 drivers/usb/core/hub.c                         |  2 +-
 drivers/usb/host/ehci-q.c                      |  4 ++--
 drivers/usb/host/fhci-hcd.c                    |  3 +--
 drivers/usb/host/fotg210-hcd.c                 |  2 +-
 drivers/usb/host/isp116x-hcd.c                 |  5 ++---
 drivers/usb/host/isp1362-hcd.c                 |  6 +++---
 drivers/usb/host/max3421-hcd.c                 |  6 +++---
 drivers/usb/host/ohci-hcd.c                    |  3 +--
 drivers/usb/host/oxu210hp-hcd.c                |  4 ++--
 drivers/usb/host/r8a66597-hcd.c                |  3 +--
 drivers/usb/host/sl811-hcd.c                   |  6 +++---
 drivers/usb/isp1760/isp1760-hcd.c              |  6 ++----
 drivers/usb/misc/ftdi-elan.c                   | 15 +++++----------
 drivers/usb/misc/lvstest.c                     |  2 +-
 drivers/usb/storage/onetouch.c                 |  2 +-
 drivers/usb/storage/transport.c                |  2 +-
 include/linux/usb.h                            | 17 ++---------------
 sound/usb/line6/pcm.c                          |  4 ++--
 sound/usb/midi.c                               |  4 ++--
 sound/usb/usx2y/usb_stream.c                   |  6 +++---
 sound/usb/usx2y/usbusx2yaudio.c                |  2 +-
 sound/usb/usx2y/usx2yhwdeppcm.c                |  2 +-
 46 files changed, 71 insertions(+), 95 deletions(-)

-- 
2.34.1

[PATCH v4 1/9] usb: deprecate the third argument of usb_maxpacket()

[Vincent Mailhol]

This is a transitional patch with the ultimate goal of changing the
prototype of usb_maxpacket() from:
| static inline __u16
| usb_maxpacket(struct usb_device *udev, int pipe, int is_out)

into:
| static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)

The third argument of usb_maxpacket(): is_out gets removed because it
can be derived from its second argument: pipe using
usb_pipeout(pipe). Furthermore, in the current version,
ubs_pipeout(pipe) is called regardless in order to sanitize the is_out
parameter.

In order to make a smooth change, we first deprecate the is_out
parameter by simply ignoring it (using a variadic function) and will
remove it later, once all the callers get updated.

The body of the function is reworked accordingly and is_out is
replaced by usb_pipeout(pipe). The WARN_ON() calls become unnecessary
and get removed.

Finally, the return type is changed from __u16 to u16 because this is
not a UAPI function.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 include/linux/usb.h | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 200b7b79acb5..572e136f6314 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1969,21 +1969,17 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
 	return eps[usb_pipeendpoint(pipe)];
 }
 
-/*-------------------------------------------------------------------------*/
-
-static inline __u16
-usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
+static inline u16 usb_maxpacket(struct usb_device *udev, int pipe,
+				/* int is_out deprecated */ ...)
 {
 	struct usb_host_endpoint	*ep;
 	unsigned			epnum = usb_pipeendpoint(pipe);
 
-	if (is_out) {
-		WARN_ON(usb_pipein(pipe));
+	if (usb_pipeout(pipe))
 		ep = udev->ep_out[epnum];
-	} else {
-		WARN_ON(usb_pipeout(pipe));
+	else
 		ep = udev->ep_in[epnum];
-	}
+
 	if (!ep)
 		return 0;
 
@@ -1991,8 +1987,6 @@ usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
 	return usb_endpoint_maxp(&ep->desc);
 }
 
-/* ----------------------------------------------------------------------- */
-
 /* translate USB error codes to codes user space understands */
 static inline int usb_translate_errors(int error_code)
 {
-- 
2.34.1

[PATCH v4 2/9] HID: usbhid: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Jiri Kosina <jikos@kernel.org>
CC: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/hid/usbhid/hid-core.c | 2 +-
 drivers/hid/usbhid/usbkbd.c   | 2 +-
 drivers/hid/usbhid/usbmouse.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 54752c85604b..4490e2f7252a 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -387,7 +387,7 @@ static int hid_submit_ctrl(struct hid_device *hid)
 
 		usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
 		maxpacket = usb_maxpacket(hid_to_usb_dev(hid),
-					  usbhid->urbctrl->pipe, 0);
+					  usbhid->urbctrl->pipe);
 		len += (len == 0);	/* Don't allow 0-length reports */
 		len = round_up(len, maxpacket);
 		if (len > usbhid->bufsize)
diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c
index df02002066ce..b4b007c4beb6 100644
--- a/drivers/hid/usbhid/usbkbd.c
+++ b/drivers/hid/usbhid/usbkbd.c
@@ -279,7 +279,7 @@ static int usb_kbd_probe(struct usb_interface *iface,
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	kbd = kzalloc(sizeof(struct usb_kbd), GFP_KERNEL);
 	input_dev = input_allocate_device();
diff --git a/drivers/hid/usbhid/usbmouse.c b/drivers/hid/usbhid/usbmouse.c
index c89332017d5d..fb1d7d1f6999 100644
--- a/drivers/hid/usbhid/usbmouse.c
+++ b/drivers/hid/usbhid/usbmouse.c
@@ -123,7 +123,7 @@ static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_i
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);
 	input_dev = input_allocate_device();
-- 
2.34.1

[PATCH v4 3/9] Input: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Ville Syrjala <syrjala@sci.fi>
CC: Dmitry Torokhov <dmitry.torokhov@gmail.com>
CC: Henk Vergonet <Henk.Vergonet@gmail.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/input/misc/ati_remote2.c         | 2 +-
 drivers/input/misc/cm109.c               | 2 +-
 drivers/input/misc/powermate.c           | 2 +-
 drivers/input/misc/yealink.c             | 2 +-
 drivers/input/tablet/acecad.c            | 2 +-
 drivers/input/tablet/pegasus_notetaker.c | 2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/input/misc/ati_remote2.c b/drivers/input/misc/ati_remote2.c
index 8a36d78fed63..946bf75aa106 100644
--- a/drivers/input/misc/ati_remote2.c
+++ b/drivers/input/misc/ati_remote2.c
@@ -639,7 +639,7 @@ static int ati_remote2_urb_init(struct ati_remote2 *ar2)
 			return -ENOMEM;
 
 		pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress);
-		maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+		maxp = usb_maxpacket(udev, pipe);
 		maxp = maxp > 4 ? 4 : maxp;
 
 		usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp,
diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c
index f515fae465c3..728325a2d574 100644
--- a/drivers/input/misc/cm109.c
+++ b/drivers/input/misc/cm109.c
@@ -745,7 +745,7 @@ static int cm109_usb_probe(struct usb_interface *intf,
 
 	/* get a handle to the interrupt data pipe */
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	ret = usb_maxpacket(udev, pipe);
 	if (ret != USB_PKT_LEN)
 		dev_err(&intf->dev, "invalid payload size %d, expected %d\n",
 			ret, USB_PKT_LEN);
diff --git a/drivers/input/misc/powermate.c b/drivers/input/misc/powermate.c
index c4e0e1886061..c1c733a9cb89 100644
--- a/drivers/input/misc/powermate.c
+++ b/drivers/input/misc/powermate.c
@@ -374,7 +374,7 @@ static int powermate_probe(struct usb_interface *intf, const struct usb_device_i
 
 	/* get a handle to the interrupt data pipe */
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 
 	if (maxp < POWERMATE_PAYLOAD_SIZE_MIN || maxp > POWERMATE_PAYLOAD_SIZE_MAX) {
 		printk(KERN_WARNING "powermate: Expected payload of %d--%d bytes, found %d bytes!\n",
diff --git a/drivers/input/misc/yealink.c b/drivers/input/misc/yealink.c
index 8ab01c7601b1..69420781db30 100644
--- a/drivers/input/misc/yealink.c
+++ b/drivers/input/misc/yealink.c
@@ -905,7 +905,7 @@ static int usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
 
 	/* get a handle to the interrupt data pipe */
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	ret = usb_maxpacket(udev, pipe);
 	if (ret != USB_PKT_LEN)
 		dev_err(&intf->dev, "invalid payload size %d, expected %zd\n",
 			ret, USB_PKT_LEN);
diff --git a/drivers/input/tablet/acecad.c b/drivers/input/tablet/acecad.c
index a38d1fe97334..56c7e471ac32 100644
--- a/drivers/input/tablet/acecad.c
+++ b/drivers/input/tablet/acecad.c
@@ -130,7 +130,7 @@ static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
 	input_dev = input_allocate_device();
diff --git a/drivers/input/tablet/pegasus_notetaker.c b/drivers/input/tablet/pegasus_notetaker.c
index 749edbdb7ffa..c608ac505d1b 100644
--- a/drivers/input/tablet/pegasus_notetaker.c
+++ b/drivers/input/tablet/pegasus_notetaker.c
@@ -296,7 +296,7 @@ static int pegasus_probe(struct usb_interface *intf,
 	pegasus->intf = intf;
 
 	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
-	pegasus->data_len = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	pegasus->data_len = usb_maxpacket(dev, pipe);
 
 	pegasus->data = usb_alloc_coherent(dev, pegasus->data_len, GFP_KERNEL,
 					   &pegasus->data_dma);
-- 
2.34.1

[PATCH v4 4/9] media: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Sean Young <sean@mess.org>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: Benjamin Valentin <benpicco@googlemail.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/media/rc/ati_remote.c           | 4 ++--
 drivers/media/rc/mceusb.c               | 2 +-
 drivers/media/rc/streamzap.c            | 2 +-
 drivers/media/rc/xbox_remote.c          | 2 +-
 drivers/media/usb/tm6000/tm6000-dvb.c   | 2 +-
 drivers/media/usb/tm6000/tm6000-input.c | 2 +-
 drivers/media/usb/tm6000/tm6000-video.c | 2 +-
 7 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/media/rc/ati_remote.c b/drivers/media/rc/ati_remote.c
index c12dda73cdd5..3155e876616d 100644
--- a/drivers/media/rc/ati_remote.c
+++ b/drivers/media/rc/ati_remote.c
@@ -773,7 +773,7 @@ static int ati_remote_initialize(struct ati_remote *ati_remote)
 
 	/* Set up irq_urb */
 	pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
 
 	usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf,
@@ -784,7 +784,7 @@ static int ati_remote_initialize(struct ati_remote *ati_remote)
 
 	/* Set up out_urb */
 	pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
 
 	usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf,
diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
index 2dc810f5a73f..0834d5f866fd 100644
--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -1728,7 +1728,7 @@ static int mceusb_dev_probe(struct usb_interface *intf,
 		pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
 	else
 		pipe = usb_rcvbulkpipe(dev, ep_in->bEndpointAddress);
-	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(dev, pipe);
 
 	ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
 	if (!ir)
diff --git a/drivers/media/rc/streamzap.c b/drivers/media/rc/streamzap.c
index 16ba85d7c090..deb85330c940 100644
--- a/drivers/media/rc/streamzap.c
+++ b/drivers/media/rc/streamzap.c
@@ -307,7 +307,7 @@ static int streamzap_probe(struct usb_interface *intf,
 	}
 
 	pipe = usb_rcvintpipe(usbdev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(usbdev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(usbdev, pipe);
 
 	if (maxp == 0) {
 		dev_err(&intf->dev, "%s: endpoint Max Packet Size is 0!?!\n",
diff --git a/drivers/media/rc/xbox_remote.c b/drivers/media/rc/xbox_remote.c
index 98d0b43608ad..7424b2031152 100644
--- a/drivers/media/rc/xbox_remote.c
+++ b/drivers/media/rc/xbox_remote.c
@@ -171,7 +171,7 @@ static int xbox_remote_initialize(struct xbox_remote *xbox_remote,
 
 	/* Set up irq_urb */
 	pipe = usb_rcvintpipe(udev, endpoint_in->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
 
 	usb_fill_int_urb(xbox_remote->irq_urb, udev, pipe, xbox_remote->inbuf,
diff --git a/drivers/media/usb/tm6000/tm6000-dvb.c b/drivers/media/usb/tm6000/tm6000-dvb.c
index 4990fa886d7a..335f747b0375 100644
--- a/drivers/media/usb/tm6000/tm6000-dvb.c
+++ b/drivers/media/usb/tm6000/tm6000-dvb.c
@@ -120,7 +120,7 @@ static int tm6000_start_stream(struct tm6000_core *dev)
 	pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
 							  & USB_ENDPOINT_NUMBER_MASK);
 
-	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	size = usb_maxpacket(dev->udev, pipe);
 	size = size * 15; /* 512 x 8 or 12 or 15 */
 
 	dvb->bulk_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
diff --git a/drivers/media/usb/tm6000/tm6000-input.c b/drivers/media/usb/tm6000/tm6000-input.c
index 84602edf3fe8..5136e9e202f1 100644
--- a/drivers/media/usb/tm6000/tm6000-input.c
+++ b/drivers/media/usb/tm6000/tm6000-input.c
@@ -340,7 +340,7 @@ static int __tm6000_ir_int_start(struct rc_dev *rc)
 		dev->int_in.endp->desc.bEndpointAddress
 		& USB_ENDPOINT_NUMBER_MASK);
 
-	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	size = usb_maxpacket(dev->udev, pipe);
 	dprintk(1, "IR max size: %d\n", size);
 
 	ir->int_urb->transfer_buffer = kzalloc(size, GFP_ATOMIC);
diff --git a/drivers/media/usb/tm6000/tm6000-video.c b/drivers/media/usb/tm6000/tm6000-video.c
index e293f6f3d1bc..d855a19551f3 100644
--- a/drivers/media/usb/tm6000/tm6000-video.c
+++ b/drivers/media/usb/tm6000/tm6000-video.c
@@ -570,7 +570,7 @@ static int tm6000_prepare_isoc(struct tm6000_core *dev)
 			       dev->isoc_in.endp->desc.bEndpointAddress &
 			       USB_ENDPOINT_NUMBER_MASK);
 
-	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	size = usb_maxpacket(dev->udev, pipe);
 
 	if (size > dev->isoc_in.maxsize)
 		size = dev->isoc_in.maxsize;
-- 
2.34.1

[PATCH v4 5/9] net: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Oliver Neukum <oliver@neukum.org>
CC: David S. Miller <davem@davemloft.net>
CC: Jakub Kicinski <kuba@kernel.org>
CC: Woojung Huh <woojung.huh@microchip.com>
CC: Felix Fietkau <nbd@nbd.name>
CC: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
CC: Ryder Lee <ryder.lee@mediatek.com>
CC: Kalle Valo <kvalo@kernel.org>
CC: Matthias Brugger <matthias.bgg@gmail.com>
CC: Stanislaw Gruszka <stf_xl@wp.pl>
CC: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/net/usb/cdc_ncm.c                      | 4 ++--
 drivers/net/usb/lan78xx.c                      | 4 ++--
 drivers/net/usb/rndis_host.c                   | 2 +-
 drivers/net/usb/usbnet.c                       | 4 ++--
 drivers/net/wireless/mediatek/mt76/usb.c       | 2 +-
 drivers/net/wireless/ralink/rt2x00/rt2x00usb.c | 4 ++--
 6 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 15f91d691bba..63ce9d81f61b 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -441,7 +441,7 @@ static void cdc_ncm_update_rxtx_max(struct usbnet *dev, u32 new_rx, u32 new_tx)
 	 * .bind which is called before usbnet sets up dev->maxpacket
 	 */
 	if (val != le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize) &&
-	    val % usb_maxpacket(dev->udev, dev->out, 1) == 0)
+	    val % usb_maxpacket(dev->udev, dev->out) == 0)
 		val++;
 
 	/* we might need to flush any pending tx buffers if running */
@@ -465,7 +465,7 @@ static void cdc_ncm_update_rxtx_max(struct usbnet *dev, u32 new_rx, u32 new_tx)
 	usbnet_update_max_qlen(dev);
 
 	/* never pad more than 3 full USB packets per transfer */
-	ctx->min_tx_pkt = clamp_t(u16, ctx->tx_max - 3 * usb_maxpacket(dev->udev, dev->out, 1),
+	ctx->min_tx_pkt = clamp_t(u16, ctx->tx_max - 3 * usb_maxpacket(dev->udev, dev->out),
 				  CDC_NCM_MIN_TX_PKT, ctx->tx_max);
 }
 
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index b8e20a3f2b84..7d35b683e005 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -4426,7 +4426,7 @@ static int lan78xx_probe(struct usb_interface *intf,
 		goto out4;
 
 	period = ep_intr->desc.bInterval;
-	maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0);
+	maxp = usb_maxpacket(dev->udev, dev->pipe_intr);
 	buf = kmalloc(maxp, GFP_KERNEL);
 	if (!buf) {
 		ret = -ENOMEM;
@@ -4444,7 +4444,7 @@ static int lan78xx_probe(struct usb_interface *intf,
 		dev->urb_intr->transfer_flags |= URB_FREE_BUFFER;
 	}
 
-	dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out, 1);
+	dev->maxpacket = usb_maxpacket(dev->udev, dev->pipe_out);
 
 	/* Reject broken descriptors. */
 	if (dev->maxpacket == 0) {
diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
index 247f58cb0f84..de0b00bd2eca 100644
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c
@@ -333,7 +333,7 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
 	net->hard_header_len += sizeof (struct rndis_data_hdr);
 	dev->hard_mtu = net->mtu + net->hard_header_len;
 
-	dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1);
+	dev->maxpacket = usb_maxpacket(dev->udev, dev->out);
 	if (dev->maxpacket == 0) {
 		netif_dbg(dev, probe, dev->net,
 			  "dev->maxpacket can't be 0\n");
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 9a6450f796dc..d5bf5733b277 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -229,7 +229,7 @@ static int init_status (struct usbnet *dev, struct usb_interface *intf)
 	pipe = usb_rcvintpipe (dev->udev,
 			dev->status->desc.bEndpointAddress
 				& USB_ENDPOINT_NUMBER_MASK);
-	maxp = usb_maxpacket (dev->udev, pipe, 0);
+	maxp = usb_maxpacket(dev->udev, pipe);
 
 	/* avoid 1 msec chatter:  min 8 msec poll rate */
 	period = max ((int) dev->status->desc.bInterval,
@@ -1789,7 +1789,7 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 
 	if (!dev->rx_urb_size)
 		dev->rx_urb_size = dev->hard_mtu;
-	dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
+	dev->maxpacket = usb_maxpacket(dev->udev, dev->out);
 	if (dev->maxpacket == 0) {
 		/* that is a broken device */
 		status = -ENODEV;
diff --git a/drivers/net/wireless/mediatek/mt76/usb.c b/drivers/net/wireless/mediatek/mt76/usb.c
index 0a7006c8959b..f84ea6996352 100644
--- a/drivers/net/wireless/mediatek/mt76/usb.c
+++ b/drivers/net/wireless/mediatek/mt76/usb.c
@@ -1132,7 +1132,7 @@ int mt76u_init(struct mt76_dev *dev,
 
 	INIT_WORK(&usb->stat_work, mt76u_tx_status_data);
 
-	usb->data_len = usb_maxpacket(udev, usb_sndctrlpipe(udev, 0), 1);
+	usb->data_len = usb_maxpacket(udev, usb_sndctrlpipe(udev, 0));
 	if (usb->data_len < 32)
 		usb->data_len = 32;
 
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
index 74c3d8cb3100..0827bc860bf8 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c
@@ -586,10 +586,10 @@ static void rt2x00usb_assign_endpoint(struct data_queue *queue,
 
 	if (queue->qid == QID_RX) {
 		pipe = usb_rcvbulkpipe(usb_dev, queue->usb_endpoint);
-		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe, 0);
+		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe);
 	} else {
 		pipe = usb_sndbulkpipe(usb_dev, queue->usb_endpoint);
-		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe, 1);
+		queue->usb_maxpacket = usb_maxpacket(usb_dev, pipe);
 	}
 
 	if (!queue->usb_maxpacket)
-- 
2.34.1

[PATCH v4 6/9] usb: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Duncan Sands <duncan.sands@free.fr>
CC: Alan Stern <stern@rowland.harvard.edu>
CC: Olav Kongas <ok@artecdesign.ee>
CC: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 drivers/usb/atm/usbatm.c          |  2 +-
 drivers/usb/c67x00/c67x00-sched.c |  4 ++--
 drivers/usb/core/hub.c            |  2 +-
 drivers/usb/host/ehci-q.c         |  4 ++--
 drivers/usb/host/fhci-hcd.c       |  3 +--
 drivers/usb/host/fotg210-hcd.c    |  2 +-
 drivers/usb/host/isp116x-hcd.c    |  5 ++---
 drivers/usb/host/isp1362-hcd.c    |  6 +++---
 drivers/usb/host/max3421-hcd.c    |  6 +++---
 drivers/usb/host/ohci-hcd.c       |  3 +--
 drivers/usb/host/oxu210hp-hcd.c   |  4 ++--
 drivers/usb/host/r8a66597-hcd.c   |  3 +--
 drivers/usb/host/sl811-hcd.c      |  6 +++---
 drivers/usb/isp1760/isp1760-hcd.c |  6 ++----
 drivers/usb/misc/ftdi-elan.c      | 15 +++++----------
 drivers/usb/misc/lvstest.c        |  2 +-
 drivers/usb/storage/onetouch.c    |  2 +-
 drivers/usb/storage/transport.c   |  2 +-
 18 files changed, 33 insertions(+), 44 deletions(-)

diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index e3a49d837609..362217189ef3 100644
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -1091,7 +1091,7 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
 			snd_buf_bytes - (snd_buf_bytes % instance->tx_channel.stride));
 
 	/* rx buffer size must be a positive multiple of the endpoint maxpacket */
-	maxpacket = usb_maxpacket(usb_dev, instance->rx_channel.endpoint, 0);
+	maxpacket = usb_maxpacket(usb_dev, instance->rx_channel.endpoint);
 
 	if ((maxpacket < 1) || (maxpacket > UDSL_MAX_BUF_SIZE)) {
 		dev_err(dev, "%s: invalid endpoint %02x!\n", __func__,
diff --git a/drivers/usb/c67x00/c67x00-sched.c b/drivers/usb/c67x00/c67x00-sched.c
index c7d3e907be81..a09fa68a6ce7 100644
--- a/drivers/usb/c67x00/c67x00-sched.c
+++ b/drivers/usb/c67x00/c67x00-sched.c
@@ -655,7 +655,7 @@ static int c67x00_add_data_urb(struct c67x00_hcd *c67x00, struct urb *urb)
 			       usb_pipeout(urb->pipe));
 	remaining = urb->transfer_buffer_length - urb->actual_length;
 
-	maxps = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
+	maxps = usb_maxpacket(urb->dev, urb->pipe);
 
 	need_empty = (urb->transfer_flags & URB_ZERO_PACKET) &&
 	    usb_pipeout(urb->pipe) && !(remaining % maxps);
@@ -866,7 +866,7 @@ static inline int c67x00_end_of_data(struct c67x00_td *td)
 	if (unlikely(!act_bytes))
 		return 1;	/* This was an empty packet */
 
-	maxps = usb_maxpacket(td_udev(td), td->pipe, usb_pipeout(td->pipe));
+	maxps = usb_maxpacket(td_udev(td), td->pipe);
 
 	if (unlikely(act_bytes < maxps))
 		return 1;	/* Smaller then full packet */
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 1460857026e0..7781b2d31473 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1635,7 +1635,7 @@ static int hub_configure(struct usb_hub *hub,
 	 * maxpktsize is defined in hcd.c's fake endpoint descriptors
 	 * to be big enough for at least USB_MAXCHILDREN ports. */
 	pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(hdev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(hdev, pipe);
 
 	if (maxp > sizeof(*hub->buffer))
 		maxp = sizeof(*hub->buffer);
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index a2a5c2996350..1163af6fad77 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -645,7 +645,7 @@ qh_urb_transaction (
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
@@ -1218,7 +1218,7 @@ static int ehci_submit_single_step_set_feature(
 
 	token |= (1 /* "in" */ << 8);  /*This is IN stage*/
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, 0);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	qtd_fill(ehci, qtd, buf, len, token, maxpacket);
 
diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
index a8e1048278d0..2ba09c3fbc2f 100644
--- a/drivers/usb/host/fhci-hcd.c
+++ b/drivers/usb/host/fhci-hcd.c
@@ -408,8 +408,7 @@ static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 			size++;
 		else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
 			 && (urb->transfer_buffer_length
-			     % usb_maxpacket(urb->dev, pipe,
-					     usb_pipeout(pipe))) != 0)
+			     % usb_maxpacket(urb->dev, pipe)) != 0)
 			size++;
 		break;
 	case PIPE_ISOCHRONOUS:
diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index c3fd375b4778..f8c111e08a0d 100644
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -2596,7 +2596,7 @@ static struct list_head *qh_urb_transaction(struct fotg210_hcd *fotg210,
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index 8835f6bd528e..70ce03d01435 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -726,7 +726,7 @@ static int isp116x_urb_enqueue(struct usb_hcd *hcd,
 		INIT_LIST_HEAD(&ep->schedule);
 		ep->udev = udev;
 		ep->epnum = epnum;
-		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe);
 		usb_settoggle(udev, epnum, is_out, 0);
 
 		if (type == PIPE_CONTROL) {
@@ -757,8 +757,7 @@ static int isp116x_urb_enqueue(struct usb_hcd *hcd,
 			ep->load = usb_calc_bus_time(udev->speed,
 						     !is_out,
 						     (type == PIPE_ISOCHRONOUS),
-						     usb_maxpacket(udev, pipe,
-								   is_out)) /
+						     usb_maxpacket(udev, pipe)) /
 			    1000;
 		}
 		hep->hcpriv = ep;
diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c
index d8610ce8f2ec..0e14d1d07709 100644
--- a/drivers/usb/host/isp1362-hcd.c
+++ b/drivers/usb/host/isp1362-hcd.c
@@ -1279,7 +1279,7 @@ static int isp1362_urb_enqueue(struct usb_hcd *hcd,
 		ep->udev = usb_get_dev(udev);
 		ep->hep = hep;
 		ep->epnum = epnum;
-		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe);
 		ep->ptd_offset = -EINVAL;
 		ep->ptd_index = -EINVAL;
 		usb_settoggle(udev, epnum, is_out, 0);
@@ -1299,8 +1299,8 @@ static int isp1362_urb_enqueue(struct usb_hcd *hcd,
 			ep->interval = urb->interval;
 			ep->branch = PERIODIC_SIZE;
 			ep->load = usb_calc_bus_time(udev->speed, !is_out,
-						     (type == PIPE_ISOCHRONOUS),
-						     usb_maxpacket(udev, pipe, is_out)) / 1000;
+						     type == PIPE_ISOCHRONOUS,
+						     usb_maxpacket(udev, pipe)) / 1000;
 			break;
 		}
 		hep->hcpriv = ep;
diff --git a/drivers/usb/host/max3421-hcd.c b/drivers/usb/host/max3421-hcd.c
index 30de85a707fe..3a48f544dcdf 100644
--- a/drivers/usb/host/max3421-hcd.c
+++ b/drivers/usb/host/max3421-hcd.c
@@ -546,7 +546,7 @@ max3421_transfer_out(struct usb_hcd *hcd, struct urb *urb, int fast_retransmit)
 		return MAX3421_HXFR_BULK_OUT(epnum);
 	}
 
-	max_packet = usb_maxpacket(urb->dev, urb->pipe, 1);
+	max_packet = usb_maxpacket(urb->dev, urb->pipe);
 
 	if (max_packet > MAX3421_FIFO_SIZE) {
 		/*
@@ -952,7 +952,7 @@ max3421_transfer_in_done(struct usb_hcd *hcd, struct urb *urb)
 	 * USB 2.0 Section 5.3.2 Pipes: packets must be full size
 	 * except for last one.
 	 */
-	max_packet = usb_maxpacket(urb->dev, urb->pipe, 0);
+	max_packet = usb_maxpacket(urb->dev, urb->pipe);
 	if (max_packet > MAX3421_FIFO_SIZE) {
 		/*
 		 * We do not support isochronous transfers at this
@@ -998,7 +998,7 @@ max3421_transfer_out_done(struct usb_hcd *hcd, struct urb *urb)
 		 * max_packet as an indicator that the end of the
 		 * packet has been reached).
 		 */
-		u32 max_packet = usb_maxpacket(urb->dev, urb->pipe, 1);
+		u32 max_packet = usb_maxpacket(urb->dev, urb->pipe);
 
 		if (max3421_hcd->curr_len == max_packet)
 			return 0;
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 666b1c665188..c4c821c2288c 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -181,8 +181,7 @@ static int ohci_urb_enqueue (
 				size++;
 			else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
 				&& (urb->transfer_buffer_length
-					% usb_maxpacket (urb->dev, pipe,
-						usb_pipeout (pipe))) == 0)
+					% usb_maxpacket(urb->dev, pipe)) == 0)
 				size++;
 			break;
 		case PIPE_ISOCHRONOUS: /* number of packets from URB */
diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index b741670525e3..aaedf55d3c62 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -1685,7 +1685,7 @@ static struct list_head *qh_urb_transaction(struct oxu_hcd *oxu,
 		token |= (1 /* "in" */ << 8);
 	/* else it's already initted to "out" pid (0 << 8) */
 
-	maxpacket = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
@@ -1796,7 +1796,7 @@ static struct ehci_qh *qh_make(struct oxu_hcd *oxu,
 
 	is_input = usb_pipein(urb->pipe);
 	type = usb_pipetype(urb->pipe);
-	maxp = usb_maxpacket(urb->dev, urb->pipe, !is_input);
+	maxp = usb_maxpacket(urb->dev, urb->pipe);
 
 	/* Compute interrupt scheduling parameters just once, and save.
 	 * - allowing for high bandwidth, how many nsec/uframe are used?
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 63719cdf6a4e..abb88dd40d4e 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -1867,8 +1867,7 @@ static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
 	td->pipe = hep->hcpriv;
 	td->urb = urb;
 	td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
-	td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
-				      !usb_pipein(urb->pipe));
+	td->maxpacket = usb_maxpacket(urb->dev, urb->pipe);
 	if (usb_pipecontrol(urb->pipe))
 		td->type = USB_PID_SETUP;
 	else if (usb_pipein(urb->pipe))
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 85623731a516..d206bd95c7bb 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -842,7 +842,7 @@ static int sl811h_urb_enqueue(
 		INIT_LIST_HEAD(&ep->schedule);
 		ep->udev = udev;
 		ep->epnum = epnum;
-		ep->maxpacket = usb_maxpacket(udev, urb->pipe, is_out);
+		ep->maxpacket = usb_maxpacket(udev, urb->pipe);
 		ep->defctrl = SL11H_HCTLMASK_ARM | SL11H_HCTLMASK_ENABLE;
 		usb_settoggle(udev, epnum, is_out, 0);
 
@@ -878,8 +878,8 @@ static int sl811h_urb_enqueue(
 			if (type == PIPE_ISOCHRONOUS)
 				ep->defctrl |= SL11H_HCTLMASK_ISOCH;
 			ep->load = usb_calc_bus_time(udev->speed, !is_out,
-				(type == PIPE_ISOCHRONOUS),
-				usb_maxpacket(udev, pipe, is_out))
+						     type == PIPE_ISOCHRONOUS,
+						     usb_maxpacket(udev, pipe))
 					/ 1000;
 			break;
 		}
diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index 893becb077d3..76862ba40f35 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -825,8 +825,7 @@ static void create_ptd_atl(struct isp1760_qh *qh,
 	memset(ptd, 0, sizeof(*ptd));
 
 	/* according to 3.6.2, max packet len can not be > 0x400 */
-	maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe,
-						usb_pipeout(qtd->urb->pipe));
+	maxpacket = usb_maxpacket(qtd->urb->dev, qtd->urb->pipe);
 	multi =  1 + ((maxpacket >> 11) & 0x3);
 	maxpacket &= 0x7ff;
 
@@ -1808,8 +1807,7 @@ static void packetize_urb(struct usb_hcd *hcd,
 			packet_type = IN_PID;
 	}
 
-	maxpacketsize = usb_maxpacket(urb->dev, urb->pipe,
-				      usb_pipeout(urb->pipe));
+	maxpacketsize = usb_maxpacket(urb->dev, urb->pipe);
 
 	/*
 	 * buffer gets wrapped in one or more qtds;
diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
index 6c38c62d29b2..b2f980409d0b 100644
--- a/drivers/usb/misc/ftdi-elan.c
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -1449,8 +1449,7 @@ wait:if (ftdi->disconnected > 0) {
 			command->length = 0x8007;
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 8;
 			command->value = 0;
 			command->buffer = urb->setup_packet;
@@ -1514,8 +1513,7 @@ wait:if (ftdi->disconnected > 0) {
 							    1);
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 0;
 			command->value = 0;
 			command->buffer = NULL;
@@ -1571,8 +1569,7 @@ wait:if (ftdi->disconnected > 0) {
 			command->length = 0x0000;
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 0;
 			command->value = 0;
 			command->buffer = NULL;
@@ -1634,8 +1631,7 @@ wait:if (ftdi->disconnected > 0) {
 			command->header = 0x81 | (ed << 5);
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = min_t(u32, 1024,
 						 urb->transfer_buffer_length -
 						 urb->actual_length);
@@ -1715,8 +1711,7 @@ wait:if (ftdi->disconnected > 0) {
 							    1);
 			command->address = (toggle_bits << 6) | (ep_number << 2)
 				| (address << 0);
-			command->width = usb_maxpacket(urb->dev, urb->pipe,
-						       usb_pipeout(urb->pipe));
+			command->width = usb_maxpacket(urb->dev, urb->pipe);
 			command->follows = 0;
 			command->value = 0;
 			command->buffer = NULL;
diff --git a/drivers/usb/misc/lvstest.c b/drivers/usb/misc/lvstest.c
index f8686139d6f3..25ec5666a75e 100644
--- a/drivers/usb/misc/lvstest.c
+++ b/drivers/usb/misc/lvstest.c
@@ -437,7 +437,7 @@ static int lvs_rh_probe(struct usb_interface *intf,
 	INIT_WORK(&lvs->rh_work, lvs_rh_work);
 
 	pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(hdev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(hdev, pipe);
 	usb_fill_int_urb(lvs->urb, hdev, pipe, &lvs->buffer[0], maxp,
 			lvs_rh_irq, lvs, endpoint->bInterval);
 
diff --git a/drivers/usb/storage/onetouch.c b/drivers/usb/storage/onetouch.c
index a989fe930e21..1db2eefeea22 100644
--- a/drivers/usb/storage/onetouch.c
+++ b/drivers/usb/storage/onetouch.c
@@ -180,7 +180,7 @@ static int onetouch_connect_input(struct us_data *ss)
 		return -ENODEV;
 
 	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
-	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(udev, pipe);
 	maxp = min(maxp, ONETOUCH_PKT_LEN);
 
 	onetouch = kzalloc(sizeof(struct usb_onetouch), GFP_KERNEL);
diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index 1928b3918242..64d96d210e02 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -363,7 +363,7 @@ static int usb_stor_intr_transfer(struct us_data *us, void *buf,
 	usb_stor_dbg(us, "xfer %u bytes\n", length);
 
 	/* calculate the max packet size */
-	maxp = usb_maxpacket(us->pusb_dev, pipe, usb_pipeout(pipe));
+	maxp = usb_maxpacket(us->pusb_dev, pipe);
 	if (maxp > length)
 		maxp = length;
 
-- 
2.34.1

[PATCH v4 7/9] sound: usb: remove third argument of usb_maxpacket()

[Vincent Mailhol]

The third argument of usb_maxpacket(): in_out has been deprecated
because it could be derived from the second argument (e.g. using
usb_pipeout(pipe)).

N.B. function usb_maxpacket() was made variadic to accommodate the
transition from the old prototype with three arguments to the new one
with only two arguments (so that no renaming is needed). The variadic
argument is to be removed once all users of usb_maxpacket() get
migrated.

CC: Jaroslav Kysela <perex@perex.cz>
CC: Takashi Iwai <tiwai@suse.com>
CC: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 sound/usb/line6/pcm.c           | 4 ++--
 sound/usb/midi.c                | 4 ++--
 sound/usb/usx2y/usb_stream.c    | 6 +++---
 sound/usb/usx2y/usbusx2yaudio.c | 2 +-
 sound/usb/usx2y/usx2yhwdeppcm.c | 2 +-
 5 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c
index fdbdfb7bce92..6a4af725aedd 100644
--- a/sound/usb/line6/pcm.c
+++ b/sound/usb/line6/pcm.c
@@ -552,10 +552,10 @@ int line6_init_pcm(struct usb_line6 *line6,
 
 	line6pcm->max_packet_size_in =
 		usb_maxpacket(line6->usbdev,
-			usb_rcvisocpipe(line6->usbdev, ep_read), 0);
+			usb_rcvisocpipe(line6->usbdev, ep_read));
 	line6pcm->max_packet_size_out =
 		usb_maxpacket(line6->usbdev,
-			usb_sndisocpipe(line6->usbdev, ep_write), 1);
+			usb_sndisocpipe(line6->usbdev, ep_write));
 	if (!line6pcm->max_packet_size_in || !line6pcm->max_packet_size_out) {
 		dev_err(line6pcm->line6->ifcdev,
 			"cannot get proper max packet size\n");
diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index 2c01649c70f6..fba498f9e7dc 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -1285,7 +1285,7 @@ static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi *umidi,
 		pipe = usb_rcvintpipe(umidi->dev, ep_info->in_ep);
 	else
 		pipe = usb_rcvbulkpipe(umidi->dev, ep_info->in_ep);
-	length = usb_maxpacket(umidi->dev, pipe, 0);
+	length = usb_maxpacket(umidi->dev, pipe);
 	for (i = 0; i < INPUT_URBS; ++i) {
 		buffer = usb_alloc_coherent(umidi->dev, length, GFP_KERNEL,
 					    &ep->urbs[i]->transfer_dma);
@@ -1374,7 +1374,7 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi *umidi,
 		pipe = usb_sndbulkpipe(umidi->dev, ep_info->out_ep);
 	switch (umidi->usb_id) {
 	default:
-		ep->max_transfer = usb_maxpacket(umidi->dev, pipe, 1);
+		ep->max_transfer = usb_maxpacket(umidi->dev, pipe);
 		break;
 		/*
 		 * Various chips declare a packet size larger than 4 bytes, but
diff --git a/sound/usb/usx2y/usb_stream.c b/sound/usb/usx2y/usb_stream.c
index 9d0e44793896..a4d32e8a1d36 100644
--- a/sound/usb/usx2y/usb_stream.c
+++ b/sound/usb/usx2y/usb_stream.c
@@ -51,7 +51,7 @@ static int init_pipe_urbs(struct usb_stream_kernel *sk,
 {
 	int u, p;
 	int maxpacket = use_packsize ?
-		use_packsize : usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+		use_packsize : usb_maxpacket(dev, pipe);
 	int transfer_length = maxpacket * sk->n_o_ps;
 
 	for (u = 0; u < USB_STREAM_NURBS;
@@ -171,7 +171,7 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
 	out_pipe = usb_sndisocpipe(dev, out_endpoint);
 
 	max_packsize = use_packsize ?
-		use_packsize : usb_maxpacket(dev, in_pipe, 0);
+		use_packsize : usb_maxpacket(dev, in_pipe);
 
 	/*
 		t_period = period_frames / sample_rate
@@ -187,7 +187,7 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
 	read_size += packets * USB_STREAM_URBDEPTH *
 		(max_packsize + sizeof(struct usb_stream_packet));
 
-	max_packsize = usb_maxpacket(dev, out_pipe, 1);
+	max_packsize = usb_maxpacket(dev, out_pipe);
 	write_size = max_packsize * packets * USB_STREAM_URBDEPTH;
 
 	if (read_size >= 256*PAGE_SIZE || write_size >= 256*PAGE_SIZE) {
diff --git a/sound/usb/usx2y/usbusx2yaudio.c b/sound/usb/usx2y/usbusx2yaudio.c
index cfc1ea53978d..9cd5e3aae4f7 100644
--- a/sound/usb/usx2y/usbusx2yaudio.c
+++ b/sound/usb/usx2y/usbusx2yaudio.c
@@ -421,7 +421,7 @@ static int usx2y_urbs_allocate(struct snd_usx2y_substream *subs)
 
 	pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
 			usb_rcvisocpipe(dev, subs->endpoint);
-	subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
+	subs->maxpacksize = usb_maxpacket(dev, pipe);
 	if (!subs->maxpacksize)
 		return -EINVAL;
 
diff --git a/sound/usb/usx2y/usx2yhwdeppcm.c b/sound/usb/usx2y/usx2yhwdeppcm.c
index db83522c1b49..240349b644f3 100644
--- a/sound/usb/usx2y/usx2yhwdeppcm.c
+++ b/sound/usb/usx2y/usx2yhwdeppcm.c
@@ -321,7 +321,7 @@ static int usx2y_usbpcm_urbs_allocate(struct snd_usx2y_substream *subs)
 
 	pipe = is_playback ? usb_sndisocpipe(dev, subs->endpoint) :
 			usb_rcvisocpipe(dev, subs->endpoint);
-	subs->maxpacksize = usb_maxpacket(dev, pipe, is_playback);
+	subs->maxpacksize = usb_maxpacket(dev, pipe);
 	if (!subs->maxpacksize)
 		return -EINVAL;
 
-- 
2.34.1

Re: [PATCH v4 7/9] sound: usb: remove third argument of usb_maxpacket()

[Takashi Iwai]

On Thu, 17 Mar 2022 04:55:12 +0100,
Vincent Mailhol wrote:
> 
> The third argument of usb_maxpacket(): in_out has been deprecated
> because it could be derived from the second argument (e.g. using
> usb_pipeout(pipe)).
> 
> N.B. function usb_maxpacket() was made variadic to accommodate the
> transition from the old prototype with three arguments to the new one
> with only two arguments (so that no renaming is needed). The variadic
> argument is to be removed once all users of usb_maxpacket() get
> migrated.
> 
> CC: Jaroslav Kysela <perex@perex.cz>
> CC: Takashi Iwai <tiwai@suse.com>
> CC: Clemens Ladisch <clemens@ladisch.de>
> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>

Acked-by: Takashi Iwai <tiwai@suse.de>


thanks,

Takashi

[PATCH v4 8/9] usb: remove third argument of usb_maxpacket()

[Vincent Mailhol]

Now that all users of usb_maxpacket() have been migrated to only use
two arguments, remove the third variadic argument which was introduced
for the transition.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 include/linux/usb.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 572e136f6314..8127782aa7a1 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1969,8 +1969,7 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
 	return eps[usb_pipeendpoint(pipe)];
 }
 
-static inline u16 usb_maxpacket(struct usb_device *udev, int pipe,
-				/* int is_out deprecated */ ...)
+static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)
 {
 	struct usb_host_endpoint	*ep;
 	unsigned			epnum = usb_pipeendpoint(pipe);
-- 
2.34.1

[PATCH v4 9/9] usb: rework usb_maxpacket() using usb_pipe_endpoint()

[Vincent Mailhol]

Rework the body of usb_maxpacket() and just rely on the
usb_pipe_endpoint() helper function to retrieve the host endpoint
instead of doing it by hand.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
 include/linux/usb.h | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 8127782aa7a1..60bee864d897 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1971,13 +1971,7 @@ usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
 
 static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)
 {
-	struct usb_host_endpoint	*ep;
-	unsigned			epnum = usb_pipeendpoint(pipe);
-
-	if (usb_pipeout(pipe))
-		ep = udev->ep_out[epnum];
-	else
-		ep = udev->ep_in[epnum];
+	struct usb_host_endpoint *ep = usb_pipe_endpoint(udev, pipe);
 
 	if (!ep)
 		return 0;
-- 
2.34.1

Re: [PATCH v4 0/9] usb: rework usb_maxpacket() and remove its third argument

[Greg Kroah-Hartman]

On Thu, Mar 17, 2022 at 12:55:05PM +0900, Vincent Mailhol wrote:
> This series rework usb_maxpacket() to change its prototype from:
> | static inline __u16
> | usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
> 
> into:
> | static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)
> 
> and rewrite the function using usb_pipe_endpoint().
> 
> Rationale:
> 
>   * The third argument of usb_maxpacket(): is_out can be derived from
>     its second one: pipe using usb_pipeout(pipe). Furthermore,
>     usb_pipeout(pipe) is being called within usb_maxpacket()
>     regardless to confirm the input.
> 
>   * This function is not exposed to the UAPI so return type should be
>     u16, not __u16.
> 
>   * usb_pipe_endpoint() (defined a couple of lines before) does most
>     of the work. Use it instead of reimplementing the same thing
>     again.
> 
> In order to do so, usb_maxpacket() is temporarily changed into a variadic
> function to ignore its third argument.
> 
> The series goes as follow:
> 
>     * Patch 1: make usb_maxpacket() variadic to accommodate during the
>       migration
> 
>     * Patch 2 to 7: migrate all the users of usb_maxpacket() (one
>       patch per tree)
> 
>     * Patch 8: remove the third argument of usb_maxpacket() now that
>       everyone is migrated
> 
>     * Patch 9: rework usb_maxpacket()'s body using usb_pipe_endpoint()

Now queued up, thanks for sticking with this!

Can you send the follow-up patch that removes the vararg?  I'll keep
that in my tree to try to catch any remaining things that come in and
get it merged when it's ok to.

thanks,

greg k-h

Re: [PATCH v4 0/9] usb: rework usb_maxpacket() and remove its third argument

[Vincent MAILHOL]

On Fri. 22 Apr. 2022 at 22:38, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
> On Thu, Mar 17, 2022 at 12:55:05PM +0900, Vincent Mailhol wrote:
> > This series rework usb_maxpacket() to change its prototype from:
> > | static inline __u16
> > | usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
> >
> > into:
> > | static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)
> >
> > and rewrite the function using usb_pipe_endpoint().
> >
> > Rationale:
> >
> >   * The third argument of usb_maxpacket(): is_out can be derived from
> >     its second one: pipe using usb_pipeout(pipe). Furthermore,
> >     usb_pipeout(pipe) is being called within usb_maxpacket()
> >     regardless to confirm the input.
> >
> >   * This function is not exposed to the UAPI so return type should be
> >     u16, not __u16.
> >
> >   * usb_pipe_endpoint() (defined a couple of lines before) does most
> >     of the work. Use it instead of reimplementing the same thing
> >     again.
> >
> > In order to do so, usb_maxpacket() is temporarily changed into a variadic
> > function to ignore its third argument.
> >
> > The series goes as follow:
> >
> >     * Patch 1: make usb_maxpacket() variadic to accommodate during the
> >       migration
> >
> >     * Patch 2 to 7: migrate all the users of usb_maxpacket() (one
> >       patch per tree)
> >
> >     * Patch 8: remove the third argument of usb_maxpacket() now that
> >       everyone is migrated
> >
> >     * Patch 9: rework usb_maxpacket()'s body using usb_pipe_endpoint()
>
> Now queued up, thanks for sticking with this!

Thanks to you for your patience and explanations!

> Can you send the follow-up patch that removes the vararg?  I'll keep
> that in my tree to try to catch any remaining things that come in and
> get it merged when it's ok to.

It is this patch:
https://lore.kernel.org/linux-usb/20220317035514.6378-9-mailhol.vincent@wanadoo.fr/

Or do you prefer me to resend it on the mailing list?


Yours sincerely,
Vincent Mailhol

Re: [PATCH v4 0/9] usb: rework usb_maxpacket() and remove its third argument

[Vincent MAILHOL]

On Fri. 22 Apr. 2022 at 23:00, Vincent MAILHOL
<mailhol.vincent@wanadoo.fr> wrote:
> On Fri. 22 Apr. 2022 at 22:38, Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> > On Thu, Mar 17, 2022 at 12:55:05PM +0900, Vincent Mailhol wrote:
> > > This series rework usb_maxpacket() to change its prototype from:
> > > | static inline __u16
> > > | usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
> > >
> > > into:
> > > | static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)
> > >
> > > and rewrite the function using usb_pipe_endpoint().
> > >
> > > Rationale:
> > >
> > >   * The third argument of usb_maxpacket(): is_out can be derived from
> > >     its second one: pipe using usb_pipeout(pipe). Furthermore,
> > >     usb_pipeout(pipe) is being called within usb_maxpacket()
> > >     regardless to confirm the input.
> > >
> > >   * This function is not exposed to the UAPI so return type should be
> > >     u16, not __u16.
> > >
> > >   * usb_pipe_endpoint() (defined a couple of lines before) does most
> > >     of the work. Use it instead of reimplementing the same thing
> > >     again.
> > >
> > > In order to do so, usb_maxpacket() is temporarily changed into a variadic
> > > function to ignore its third argument.
> > >
> > > The series goes as follow:
> > >
> > >     * Patch 1: make usb_maxpacket() variadic to accommodate during the
> > >       migration
> > >
> > >     * Patch 2 to 7: migrate all the users of usb_maxpacket() (one
> > >       patch per tree)
> > >
> > >     * Patch 8: remove the third argument of usb_maxpacket() now that
> > >       everyone is migrated
> > >
> > >     * Patch 9: rework usb_maxpacket()'s body using usb_pipe_endpoint()
> >
> > Now queued up, thanks for sticking with this!
>
> Thanks to you for your patience and explanations!
>
> > Can you send the follow-up patch that removes the vararg?  I'll keep
> > that in my tree to try to catch any remaining things that come in and
> > get it merged when it's ok to.
>
> It is this patch:
> https://lore.kernel.org/linux-usb/20220317035514.6378-9-mailhol.vincent@wanadoo.fr/
>
> Or do you prefer me to resend it on the mailing list?

Actually, you already added it to your tree:
https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git/commit/?h=usb-testing&id=386311fd6ef976eb1e3febd836b4ce2425f0ef37

I am not sure I understand what you want me to do here. Sorry.

Re: [PATCH v4 0/9] usb: rework usb_maxpacket() and remove its third argument

[Greg Kroah-Hartman]

On Fri, Apr 22, 2022 at 11:07:17PM +0900, Vincent MAILHOL wrote:
> On Fri. 22 Apr. 2022 at 23:00, Vincent MAILHOL
> <mailhol.vincent@wanadoo.fr> wrote:
> > On Fri. 22 Apr. 2022 at 22:38, Greg Kroah-Hartman
> > <gregkh@linuxfoundation.org> wrote:
> > > On Thu, Mar 17, 2022 at 12:55:05PM +0900, Vincent Mailhol wrote:
> > > > This series rework usb_maxpacket() to change its prototype from:
> > > > | static inline __u16
> > > > | usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
> > > >
> > > > into:
> > > > | static inline u16 usb_maxpacket(struct usb_device *udev, int pipe)
> > > >
> > > > and rewrite the function using usb_pipe_endpoint().
> > > >
> > > > Rationale:
> > > >
> > > >   * The third argument of usb_maxpacket(): is_out can be derived from
> > > >     its second one: pipe using usb_pipeout(pipe). Furthermore,
> > > >     usb_pipeout(pipe) is being called within usb_maxpacket()
> > > >     regardless to confirm the input.
> > > >
> > > >   * This function is not exposed to the UAPI so return type should be
> > > >     u16, not __u16.
> > > >
> > > >   * usb_pipe_endpoint() (defined a couple of lines before) does most
> > > >     of the work. Use it instead of reimplementing the same thing
> > > >     again.
> > > >
> > > > In order to do so, usb_maxpacket() is temporarily changed into a variadic
> > > > function to ignore its third argument.
> > > >
> > > > The series goes as follow:
> > > >
> > > >     * Patch 1: make usb_maxpacket() variadic to accommodate during the
> > > >       migration
> > > >
> > > >     * Patch 2 to 7: migrate all the users of usb_maxpacket() (one
> > > >       patch per tree)
> > > >
> > > >     * Patch 8: remove the third argument of usb_maxpacket() now that
> > > >       everyone is migrated
> > > >
> > > >     * Patch 9: rework usb_maxpacket()'s body using usb_pipe_endpoint()
> > >
> > > Now queued up, thanks for sticking with this!
> >
> > Thanks to you for your patience and explanations!
> >
> > > Can you send the follow-up patch that removes the vararg?  I'll keep
> > > that in my tree to try to catch any remaining things that come in and
> > > get it merged when it's ok to.
> >
> > It is this patch:
> > https://lore.kernel.org/linux-usb/20220317035514.6378-9-mailhol.vincent@wanadoo.fr/
> >
> > Or do you prefer me to resend it on the mailing list?
> 
> Actually, you already added it to your tree:
> https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git/commit/?h=usb-testing&id=386311fd6ef976eb1e3febd836b4ce2425f0ef37
> 
> I am not sure I understand what you want me to do here. Sorry.

Ah, sorry, you are right, I was expecting it to be the last patch in the
series, not second-to-last.  All is good!