linux-kernel - Re: [PATCH 1/1] [media] uvcvideo: quirk PROBE

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Date:	Thu, 16 May 2013 18:14:34 +0200
From:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:	Joseph Salisbury <joseph.salisbury@...onical.com>
Cc:	linux-kernel@...r.kernel.org, mchehab@...hat.com,
	linux-media@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH 1/1] [media] uvcvideo: quirk PROBE_DEF for Alienware X51 OmniVision webcam

Hi Joseph,

On Thursday 16 May 2013 12:07:54 Joseph Salisbury wrote:
> On 05/16/2013 08:03 AM, Laurent Pinchart wrote:
> > On Wednesday 15 May 2013 16:38:48 joseph.salisbury@...onical.com wrote:
> >> From: Joseph Salisbury <joseph.salisbury@...onical.com>
> >> 
> >> BugLink: http://bugs.launchpad.net/bugs/1180409
> >> 
> >> OminiVision webcam 0x05a9:0x2643 needs the same UVC_QUIRK_PROBE_DEF as
> >> other OmniVision models to work properly.
> >> 
> >> Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> >> Cc: Mauro Carvalho Chehab <mchehab@...hat.com>
> >> Cc: linux-media@...r.kernel.org
> >> Cc: stable@...r.kernel.org
> >> Signed-off-by: Joseph Salisbury <joseph.salisbury@...onical.com>
> > 
> > There's already a 05a9:2643 webcam model, found in a Dell monitor, that
> > has been reported to work properly without the UVC_QUIRK_PROBE_DEF.
> > Enabling the quirk shouldn't hurt, but I'd like to check differences
> > between the two devices. Could you please send me the output of
> > 
> > lsusb -v -d 05a9:2643
> > 
> > (running as root if possible) ?
> 
> The lsusb output can be seen at:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1180409/comments/10/+do
> wnload

Thank you. It looks like the two devices are identical. I don't know why the 
PROBE_DEF quirk hasn't been reported as necessary before. Anyway, I've applied 
your patch to my tree.

> I can also send this to you as an attachment if needed.
> 
> >> ---
> >> 
> >>  drivers/media/usb/uvc/uvc_driver.c |    9 +++++++++
> >>  1 file changed, 9 insertions(+)
> >> 
> >> diff --git a/drivers/media/usb/uvc/uvc_driver.c
> >> b/drivers/media/usb/uvc/uvc_driver.c index 5dbefa6..411682c 100644
> >> --- a/drivers/media/usb/uvc/uvc_driver.c
> >> +++ b/drivers/media/usb/uvc/uvc_driver.c
> >> @@ -2163,6 +2163,15 @@ static struct usb_device_id uvc_ids[] = {
> >> 
> >>  	  .bInterfaceSubClass	= 1,
> >>  	  .bInterfaceProtocol	= 0,
> >>  	  .driver_info 		= UVC_QUIRK_PROBE_DEF },
> >> 
> >> + 	/* Alienware X51*/
> >> +        { .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
> >> +                                | USB_DEVICE_ID_MATCH_INT_INFO,
> >> +          .idVendor             = 0x05a9,
> >> +          .idProduct            = 0x2643,
> >> +          .bInterfaceClass      = USB_CLASS_VIDEO,
> >> +          .bInterfaceSubClass   = 1,
> >> +          .bInterfaceProtocol   = 0,
> >> +          .driver_info          = UVC_QUIRK_PROBE_DEF },
> > 
> > Your mailer messed up formatting. As the patch is small I've fixed it
> > manually, but please make sure to use a proper mail client next time. I
> > advise using git-send-email to send patches.
> 
> Thanks.  I did in fact use git-send-email, which is what I use to send
> all patches.  Can you point out the bad formatting.  Is it that   '|
> USB_DEVICE_ID_MATCH_INT_INFO,' was not indented?  If so, I'll
> investigate why that happened.

Tabs were replaced with spaces, I assumed it was due to a mailer issue.

> >>  	/* Apple Built-In iSight */
> >>  	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
> >>  	
> >>  				| USB_DEVICE_ID_MATCH_INT_INFO,
> 
> Thanks again for reviewing this patch.

-- 
Regards,

Laurent Pinchart

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