On Mon, Aug 22, 2022 at 04:02:55PM +0300, Laurent Pinchart wrote:
> Hi Ricardo,
>
> Thank you for the patch.
>
> On Mon, Aug 08, 2022 at 03:41:06PM +0200, Ricardo Ribalda wrote:
> > The device is using a different InterfaceProtocol than the one set in
> > the original quirk.
Also, I would mention that the device implements UVC 1.5:
The Quanta 0408:4034 camera implements UVC 1.5, and thus sets
bInterfaceProtocol to UVC_PC_PROTOCOL_15. Commit 95f03d973478 ("media:
uvcvideo: Limit power line control for Quanta cameras") added a quirk
for the device that incorrectly specified the UVC 1.0 protocol,
rendering the quirk inoperative. Fix it.
As this is a v6.0 fix, would you mind submitting a v2 with these changes
? Mauro could then pick it up directly.
> > Fixes: 95f03d973478 ("media: uvcvideo: Limit power line control for Quanta cameras")
> > Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
> > ---
> >
> > This was fixed on the last version of the patchset. Unfortunately I did
> > checked that it was the version merged :(.
>
> Oops :-(
>
> > It is too late to land it in this version?
>
> I think it can be considered as a v6.0 fix, yes.
>
> > drivers/media/usb/uvc/uvc_driver.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
> > index 9c05776f11d1..6556158a8888 100644
> > --- a/drivers/media/usb/uvc/uvc_driver.c
> > +++ b/drivers/media/usb/uvc/uvc_driver.c
> > @@ -2740,7 +2740,7 @@ static const struct usb_device_id uvc_ids[] = {
> > .idProduct = 0x4034,
> > .bInterfaceClass = USB_CLASS_VIDEO,
> > .bInterfaceSubClass = 1,
> > - .bInterfaceProtocol = 0,
> > + .bInterfaceProtocol = 1,
>
> Should we use UVC_PC_PROTOCOL_15 here ?
>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
>
> > .driver_info = (kernel_ulong_t)&uvc_ctrl_power_line_limited },
> > /* LogiLink Wireless Webcam */
> > { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
--
Regards,
Laurent Pinchart
