From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: himadrispandya@gmail.com, dvyukov@google.com, linux-usb@vger.kernel.org
Cc: perex@perex.cz, tiwai@suse.com, stern@rowland.harvard.ed,
linux-kernel@vger.kernel.org, marcel@holtmann.org,
johan.hedberg@gmail.com, linux-bluetooth@vger.kernel.org,
alsa-devel@alsa-project.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
Eli Billauer <eli.billauer@gmail.com>,
Emiliano Ingrassia <ingrassia@epigenesys.com>,
Alan Stern <stern@rowland.harvard.edu>,
Alexander Tsoy <alexander@tsoy.me>,
"Geoffrey D. Bennett" <g@b4.vu>,
Jussi Laako <jussi@sonarnerd.net>,
Nick Kossifidis <mickflemm@gmail.com>,
Dmitry Panchenko <dmitry@d-systems.ee>,
Chris Wulff <crwulff@gmail.com>,
Jesus Ramos <jesus-ramos@live.com>
Subject: [PATCH 01/10] USB: move snd_usb_pipe_sanity_check into the USB core
Date: Wed, 2 Sep 2020 13:01:03 +0200 [thread overview]
Message-ID: <20200902110115.1994491-2-gregkh@linuxfoundation.org> (raw)
In-Reply-To: <20200902110115.1994491-1-gregkh@linuxfoundation.org>
snd_usb_pipe_sanity_check() is a great function, so let's move it into
the USB core so that other parts of the kernel, including the USB core,
can call it.
Name it usb_pipe_type_check() to match the existing
usb_urb_ep_type_check() call, which now uses this function.
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Eli Billauer <eli.billauer@gmail.com>
Cc: Emiliano Ingrassia <ingrassia@epigenesys.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Alexander Tsoy <alexander@tsoy.me>
Cc: "Geoffrey D. Bennett" <g@b4.vu>
Cc: Jussi Laako <jussi@sonarnerd.net>
Cc: Nick Kossifidis <mickflemm@gmail.com>
Cc: Dmitry Panchenko <dmitry@d-systems.ee>
Cc: Chris Wulff <crwulff@gmail.com>
Cc: Jesus Ramos <jesus-ramos@live.com>
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: alsa-devel@alsa-project.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/core/urb.c | 29 ++++++++++++++++++++++-------
include/linux/usb.h | 1 +
sound/usb/helper.c | 16 +---------------
sound/usb/helper.h | 1 -
sound/usb/mixer_scarlett_gen2.c | 2 +-
sound/usb/quirks.c | 12 ++++++------
6 files changed, 31 insertions(+), 30 deletions(-)
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 27e83e55a590..45bc2914c1ba 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -192,24 +192,39 @@ static const int pipetypes[4] = {
};
/**
- * usb_urb_ep_type_check - sanity check of endpoint in the given urb
- * @urb: urb to be checked
+ * usb_pipe_type_check - sanity check of a specific pipe for a usb device
+ * @dev: struct usb_device to be checked
+ * @pipe: pipe to check
*
* This performs a light-weight sanity check for the endpoint in the
- * given urb. It returns 0 if the urb contains a valid endpoint, otherwise
- * a negative error code.
+ * given usb device. It returns 0 if the pipe is a valid for the specific usb
+ * device, otherwise a negative error code.
*/
-int usb_urb_ep_type_check(const struct urb *urb)
+int usb_pipe_type_check(struct usb_device *dev, unsigned int pipe)
{
const struct usb_host_endpoint *ep;
- ep = usb_pipe_endpoint(urb->dev, urb->pipe);
+ ep = usb_pipe_endpoint(dev, pipe);
if (!ep)
return -EINVAL;
- if (usb_pipetype(urb->pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
+ if (usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
return -EINVAL;
return 0;
}
+EXPORT_SYMBOL_GPL(usb_pipe_type_check);
+
+/**
+ * usb_urb_ep_type_check - sanity check of endpoint in the given urb
+ * @urb: urb to be checked
+ *
+ * This performs a light-weight sanity check for the endpoint in the
+ * given urb. It returns 0 if the urb contains a valid endpoint, otherwise
+ * a negative error code.
+ */
+int usb_urb_ep_type_check(const struct urb *urb)
+{
+ return usb_pipe_type_check(urb->dev, urb->pipe);
+}
EXPORT_SYMBOL_GPL(usb_urb_ep_type_check);
/**
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 20c555db4621..0b3963d7ec38 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1764,6 +1764,7 @@ static inline int usb_urb_dir_out(struct urb *urb)
return (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_OUT;
}
+int usb_pipe_type_check(struct usb_device *dev, unsigned int pipe);
int usb_urb_ep_type_check(const struct urb *urb);
void *usb_alloc_coherent(struct usb_device *dev, size_t size,
diff --git a/sound/usb/helper.c b/sound/usb/helper.c
index 4c12cc5b53fd..cf92d7110773 100644
--- a/sound/usb/helper.c
+++ b/sound/usb/helper.c
@@ -63,20 +63,6 @@ void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype
return NULL;
}
-/* check the validity of pipe and EP types */
-int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe)
-{
- static const int pipetypes[4] = {
- PIPE_CONTROL, PIPE_ISOCHRONOUS, PIPE_BULK, PIPE_INTERRUPT
- };
- struct usb_host_endpoint *ep;
-
- ep = usb_pipe_endpoint(dev, pipe);
- if (!ep || usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
- return -EINVAL;
- return 0;
-}
-
/*
* Wrapper for usb_control_msg().
* Allocates a temp buffer to prevent dmaing from/to the stack.
@@ -89,7 +75,7 @@ int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
void *buf = NULL;
int timeout;
- if (snd_usb_pipe_sanity_check(dev, pipe))
+ if (usb_pipe_type_check(dev, pipe))
return -EINVAL;
if (size > 0) {
diff --git a/sound/usb/helper.h b/sound/usb/helper.h
index 5e8a18b4e7b9..f5b4c6647e4d 100644
--- a/sound/usb/helper.h
+++ b/sound/usb/helper.h
@@ -7,7 +7,6 @@ unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
-int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe);
int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
__u8 request, __u8 requesttype, __u16 value, __u16 index,
void *data, __u16 size);
diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c
index 0ffff7640892..9609c6d9655c 100644
--- a/sound/usb/mixer_scarlett_gen2.c
+++ b/sound/usb/mixer_scarlett_gen2.c
@@ -1978,7 +1978,7 @@ static int scarlett2_mixer_status_create(struct usb_mixer_interface *mixer)
return 0;
}
- if (snd_usb_pipe_sanity_check(dev, pipe))
+ if (usb_pipe_type_check(dev, pipe))
return -EINVAL;
mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index abf99b814a0f..fc3aab04a0bc 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -846,7 +846,7 @@ static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
void *buf;
- if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x05)))
+ if (usb_pipe_type_check(dev, usb_sndintpipe(dev, 0x05)))
return -EINVAL;
buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
if (!buf)
@@ -875,7 +875,7 @@ static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev)
{
int ret;
- if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
+ if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0)))
return -EINVAL;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
@@ -984,7 +984,7 @@ static int snd_usb_axefx3_boot_quirk(struct usb_device *dev)
dev_dbg(&dev->dev, "Waiting for Axe-Fx III to boot up...\n");
- if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
+ if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0)))
return -EINVAL;
/* If the Axe-Fx III has not fully booted, it will timeout when trying
* to enable the audio streaming interface. A more generous timeout is
@@ -1018,7 +1018,7 @@ static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf,
{
int err, actual_length;
- if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x01)))
+ if (usb_pipe_type_check(dev, usb_sndintpipe(dev, 0x01)))
return -EINVAL;
err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x01), buf, *length,
&actual_length, 1000);
@@ -1030,7 +1030,7 @@ static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf,
memset(buf, 0, buf_size);
- if (snd_usb_pipe_sanity_check(dev, usb_rcvintpipe(dev, 0x82)))
+ if (usb_pipe_type_check(dev, usb_rcvintpipe(dev, 0x82)))
return -EINVAL;
err = usb_interrupt_msg(dev, usb_rcvintpipe(dev, 0x82), buf, buf_size,
&actual_length, 1000);
@@ -1117,7 +1117,7 @@ static int snd_usb_motu_m_series_boot_quirk(struct usb_device *dev)
{
int ret;
- if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
+ if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0)))
return -EINVAL;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
--
2.28.0
next prev parent reply other threads:[~2020-09-02 11:02 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-02 11:01 [PATCH 00/10] USB: new USB control message helper functions Greg Kroah-Hartman
2020-09-02 11:01 ` Greg Kroah-Hartman [this message]
2020-09-02 14:35 ` [PATCH 01/10] USB: move snd_usb_pipe_sanity_check into the USB core Takashi Iwai
2020-09-07 14:42 ` Greg Kroah-Hartman
2020-09-03 0:45 ` Alan Stern
2020-09-03 6:40 ` Takashi Iwai
2020-09-03 7:32 ` Greg Kroah-Hartman
2020-09-07 14:16 ` Greg Kroah-Hartman
2020-09-07 14:24 ` Alan Stern
2020-09-02 11:01 ` [PATCH 02/10] USB: add usb_control_msg_send() and usb_control_msg_recv() Greg Kroah-Hartman
2020-09-02 11:01 ` [PATCH 03/10] USB: core: message.c: use usb_control_msg_send() in a few places Greg Kroah-Hartman
2020-09-02 11:23 ` Andy Shevchenko
2020-09-02 11:01 ` [PATCH 04/10] USB: core: hub.c: " Greg Kroah-Hartman
2020-09-02 14:57 ` Alan Stern
2020-09-02 15:21 ` Greg Kroah-Hartman
2020-09-02 11:01 ` [PATCH 05/10] USB: legousbtower: use usb_control_msg_recv() Greg Kroah-Hartman
2020-09-02 11:01 ` [PATCH 06/10] sound: usx2y: move to use usb_control_msg_send() Greg Kroah-Hartman
2020-09-02 14:36 ` Takashi Iwai
2020-09-02 11:01 ` [PATCH 07/10] sound: 6fire: move to use usb_control_msg_send() and usb_control_msg_recv() Greg Kroah-Hartman
2020-09-02 14:36 ` Takashi Iwai
2020-09-02 11:01 ` [PATCH 7/9] sound: line6: convert to use new usb control function Greg Kroah-Hartman
2020-09-02 14:41 ` Takashi Iwai
2020-09-02 15:22 ` Greg Kroah-Hartman
2020-09-02 11:01 ` [PATCH 8/9] sound: 6fire: move to use new usb control functions Greg Kroah-Hartman
2020-09-02 11:01 ` [PATCH 08/10] sound: line6: move to use usb_control_msg_send() and usb_control_msg_recv() Greg Kroah-Hartman
2020-09-02 14:38 ` Takashi Iwai
2020-09-02 11:01 ` [PATCH 9/9] sound: hiface: convert to use new usb_control functions Greg Kroah-Hartman
2020-09-02 11:01 ` [PATCH 09/10] sound: hiface: move to use usb_control_msg_send() Greg Kroah-Hartman
2020-09-02 14:40 ` Takashi Iwai
2020-09-02 11:01 ` [PATCH 10/10] Bluetooth: ath3k: use usb_control_msg_send() and usb_control_msg_recv() Greg Kroah-Hartman
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