On 08/12/2014 06:21 PM, Laurent Pinchart wrote: > Hi Hans, > > On Tuesday 12 August 2014 17:38:55 Hans Verkuil wrote: >> On 08/12/2014 05:07 PM, Hans de Goede wrote: >>> On 08/07/2014 04:49 PM, Udo van den Heuvel wrote: >>>> On 2014-08-04 11:17, Laurent Pinchart wrote: >>>>> (CC'ing Hans de Goede, the pwc maintainer, and the linux-media mailing >>>>> list) >>> >>> Thanks for the bug report. I've been looking into this, and there >>> seem to be 2 problems: >>> >>> 1: xhci_hcd 0000:02:00.0: ERROR: unexpected command completion code 0x11. >>> >>> This seems to be what is causing things to not work with a usb-3 port >>> for you. Might be fixed by this commit: >>> https://git.kernel.org/cgit/linux/kernel/git/gregkh/usb.git/commit/drivers >>> /usb/host?h=usb-next&id=3213b151387df0b95f4eada104f68eb1c1409cb3 >>> >>> Can you please do "lspci -nn", and then copy and paste the output here, >>> so that we can see what sort of xhci controller you've (and try to >>> reproduce the problem). >>> >>> 2: The triggering of a WARN_ON in __vb2_queue_cancel() when called on >>> streamoff. I've been looking at the code and I cannot figure out why this >>> is triggering I'm afraid. >> >> You can ignore this one. >> >> The uvc driver is doing messy things with vb2 which causes this warning. >> That said, it will not break things for you. It is just a warning that the >> driver needs to be improved. > > I can certainly take the blame when my code needs to be improved, but in this > case the webcam is supported by the pwc driver, not the uvc driver :-) > It was a bit confusing, but he has two problems: one pwc, one (the warning) for uvc. Regards, Hans -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
