* [PATCH 1/1] usb: serial: option: add ZLP support for 0x1bc7/0x9010
@ 2019-09-20 10:23 Daniele Palmas
2019-11-15 11:17 ` Daniele Palmas
0 siblings, 1 reply; 4+ messages in thread
From: Daniele Palmas @ 2019-09-20 10:23 UTC (permalink / raw)
To: Johan Hovold; +Cc: linux-usb, Daniele Palmas
Telit FN980 flashing device 0x1bc7/0x9010 requires zero packet
to be sent if out data size is equal to the endpoint max size.
Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
---
drivers/usb/serial/option.c | 8 ++++++++
drivers/usb/serial/usb-wwan.h | 1 +
drivers/usb/serial/usb_wwan.c | 9 +++++++++
3 files changed, 18 insertions(+)
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 38e920ac7f82..ce5ceafe2ccd 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -565,6 +565,9 @@ static void option_instat_callback(struct urb *urb);
/* Interface must have two endpoints */
#define NUMEP2 BIT(16)
+/* Device needs ZLP */
+#define ZLP BIT(17)
+
static const struct usb_device_id option_ids[] = {
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
@@ -1184,6 +1187,8 @@ static const struct usb_device_id option_ids[] = {
.driver_info = NCTRL(0) | RSVD(1) },
{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1901, 0xff), /* Telit LN940 (MBIM) */
.driver_info = NCTRL(0) },
+ { USB_DEVICE(TELIT_VENDOR_ID, 0x9010), /* Telit SBL FN980 flashing device */
+ .driver_info = NCTRL(0) | ZLP },
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF622, 0xff, 0xff, 0xff) }, /* ZTE WCDMA products */
{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0002, 0xff, 0xff, 0xff),
.driver_info = RSVD(1) },
@@ -2079,6 +2084,9 @@ static int option_attach(struct usb_serial *serial)
if (!(device_flags & NCTRL(iface_desc->bInterfaceNumber)))
data->use_send_setup = 1;
+ if (device_flags & ZLP)
+ data->use_zlp = 1;
+
spin_lock_init(&data->susp_lock);
usb_set_serial_data(serial, data);
diff --git a/drivers/usb/serial/usb-wwan.h b/drivers/usb/serial/usb-wwan.h
index 1c120eaf4091..934e9361cf6b 100644
--- a/drivers/usb/serial/usb-wwan.h
+++ b/drivers/usb/serial/usb-wwan.h
@@ -38,6 +38,7 @@ struct usb_wwan_intf_private {
spinlock_t susp_lock;
unsigned int suspended:1;
unsigned int use_send_setup:1;
+ unsigned int use_zlp:1;
int in_flight;
unsigned int open_ports;
void *private;
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index 7e855c87e4f7..8066b5e2d305 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -228,6 +228,15 @@ int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
} else {
intfdata->in_flight++;
spin_unlock_irqrestore(&intfdata->susp_lock, flags);
+ if (intfdata->use_zlp) {
+ unsigned int ep_maxp;
+
+ ep_maxp = usb_maxpacket(port->serial->dev,
+ this_urb->pipe, 1);
+
+ if (ep_maxp && (todo % ep_maxp == 0))
+ this_urb->transfer_flags |= URB_ZERO_PACKET;
+ }
err = usb_submit_urb(this_urb, GFP_ATOMIC);
if (err) {
dev_err(&port->dev,
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH 1/1] usb: serial: option: add ZLP support for 0x1bc7/0x9010
2019-09-20 10:23 [PATCH 1/1] usb: serial: option: add ZLP support for 0x1bc7/0x9010 Daniele Palmas
@ 2019-11-15 11:17 ` Daniele Palmas
2019-11-15 11:29 ` Johan Hovold
0 siblings, 1 reply; 4+ messages in thread
From: Daniele Palmas @ 2019-11-15 11:17 UTC (permalink / raw)
To: Johan Hovold; +Cc: linux-usb
Hello Johan,
Il giorno ven 20 set 2019 alle ore 12:24 Daniele Palmas
<dnlplm@gmail.com> ha scritto:
>
> Telit FN980 flashing device 0x1bc7/0x9010 requires zero packet
> to be sent if out data size is equal to the endpoint max size.
>
> Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
should I resend this one or is there a problem with the patch?
Thanks,
Daniele
> ---
> drivers/usb/serial/option.c | 8 ++++++++
> drivers/usb/serial/usb-wwan.h | 1 +
> drivers/usb/serial/usb_wwan.c | 9 +++++++++
> 3 files changed, 18 insertions(+)
>
> diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
> index 38e920ac7f82..ce5ceafe2ccd 100644
> --- a/drivers/usb/serial/option.c
> +++ b/drivers/usb/serial/option.c
> @@ -565,6 +565,9 @@ static void option_instat_callback(struct urb *urb);
> /* Interface must have two endpoints */
> #define NUMEP2 BIT(16)
>
> +/* Device needs ZLP */
> +#define ZLP BIT(17)
> +
>
> static const struct usb_device_id option_ids[] = {
> { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
> @@ -1184,6 +1187,8 @@ static const struct usb_device_id option_ids[] = {
> .driver_info = NCTRL(0) | RSVD(1) },
> { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1901, 0xff), /* Telit LN940 (MBIM) */
> .driver_info = NCTRL(0) },
> + { USB_DEVICE(TELIT_VENDOR_ID, 0x9010), /* Telit SBL FN980 flashing device */
> + .driver_info = NCTRL(0) | ZLP },
> { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF622, 0xff, 0xff, 0xff) }, /* ZTE WCDMA products */
> { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0002, 0xff, 0xff, 0xff),
> .driver_info = RSVD(1) },
> @@ -2079,6 +2084,9 @@ static int option_attach(struct usb_serial *serial)
> if (!(device_flags & NCTRL(iface_desc->bInterfaceNumber)))
> data->use_send_setup = 1;
>
> + if (device_flags & ZLP)
> + data->use_zlp = 1;
> +
> spin_lock_init(&data->susp_lock);
>
> usb_set_serial_data(serial, data);
> diff --git a/drivers/usb/serial/usb-wwan.h b/drivers/usb/serial/usb-wwan.h
> index 1c120eaf4091..934e9361cf6b 100644
> --- a/drivers/usb/serial/usb-wwan.h
> +++ b/drivers/usb/serial/usb-wwan.h
> @@ -38,6 +38,7 @@ struct usb_wwan_intf_private {
> spinlock_t susp_lock;
> unsigned int suspended:1;
> unsigned int use_send_setup:1;
> + unsigned int use_zlp:1;
> int in_flight;
> unsigned int open_ports;
> void *private;
> diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
> index 7e855c87e4f7..8066b5e2d305 100644
> --- a/drivers/usb/serial/usb_wwan.c
> +++ b/drivers/usb/serial/usb_wwan.c
> @@ -228,6 +228,15 @@ int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
> } else {
> intfdata->in_flight++;
> spin_unlock_irqrestore(&intfdata->susp_lock, flags);
> + if (intfdata->use_zlp) {
> + unsigned int ep_maxp;
> +
> + ep_maxp = usb_maxpacket(port->serial->dev,
> + this_urb->pipe, 1);
> +
> + if (ep_maxp && (todo % ep_maxp == 0))
> + this_urb->transfer_flags |= URB_ZERO_PACKET;
> + }
> err = usb_submit_urb(this_urb, GFP_ATOMIC);
> if (err) {
> dev_err(&port->dev,
> --
> 2.17.1
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 1/1] usb: serial: option: add ZLP support for 0x1bc7/0x9010
2019-11-15 11:17 ` Daniele Palmas
@ 2019-11-15 11:29 ` Johan Hovold
2019-11-15 11:48 ` Daniele Palmas
0 siblings, 1 reply; 4+ messages in thread
From: Johan Hovold @ 2019-11-15 11:29 UTC (permalink / raw)
To: Daniele Palmas; +Cc: Johan Hovold, linux-usb
Hi Daniele,
On Fri, Nov 15, 2019 at 12:17:16PM +0100, Daniele Palmas wrote:
> Hello Johan,
>
> Il giorno ven 20 set 2019 alle ore 12:24 Daniele Palmas
> <dnlplm@gmail.com> ha scritto:
> >
> > Telit FN980 flashing device 0x1bc7/0x9010 requires zero packet
> > to be sent if out data size is equal to the endpoint max size.
> >
> > Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
>
> should I resend this one or is there a problem with the patch?
This is the first time I see this one. Must have gotten stuck in a spam
filter or something. Sorry about that.
Would you mind resending, and I'll take a look?
Johan
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 1/1] usb: serial: option: add ZLP support for 0x1bc7/0x9010
2019-11-15 11:29 ` Johan Hovold
@ 2019-11-15 11:48 ` Daniele Palmas
0 siblings, 0 replies; 4+ messages in thread
From: Daniele Palmas @ 2019-11-15 11:48 UTC (permalink / raw)
To: Johan Hovold; +Cc: linux-usb
Il giorno ven 15 nov 2019 alle ore 12:29 Johan Hovold
<johan@kernel.org> ha scritto:
>
> Hi Daniele,
>
> On Fri, Nov 15, 2019 at 12:17:16PM +0100, Daniele Palmas wrote:
> > Hello Johan,
> >
> > Il giorno ven 20 set 2019 alle ore 12:24 Daniele Palmas
> > <dnlplm@gmail.com> ha scritto:
> > >
> > > Telit FN980 flashing device 0x1bc7/0x9010 requires zero packet
> > > to be sent if out data size is equal to the endpoint max size.
> > >
> > > Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
> >
> > should I resend this one or is there a problem with the patch?
>
> This is the first time I see this one. Must have gotten stuck in a spam
> filter or something. Sorry about that.
>
> Would you mind resending, and I'll take a look?
>
Sure, I'll do.
Thanks,
Daniele
> Johan
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-11-15 11:49 UTC | newest]
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2019-09-20 10:23 [PATCH 1/1] usb: serial: option: add ZLP support for 0x1bc7/0x9010 Daniele Palmas
2019-11-15 11:17 ` Daniele Palmas
2019-11-15 11:29 ` Johan Hovold
2019-11-15 11:48 ` Daniele Palmas
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