Em Wed, 9 Jan 2019 08:51:29 +0500
Mikhail Gavrilov <mikhail.v.gavri...@gmail.com> escreveu:
> I upgraded kernel to 5.0 rc1 and the error message "Unknown
> pixelformat 0x00000000" are disappeared.
>
> Instead I see not obvious message "uvcvideo: Non-zero status (-71) in
> video completion handler."
This is unrelated. Usually, you get -71 errors when there's a problem
with usb cabling. This is what it means:
#define EPROTO 71 /* Protocol error */
From Documentation/driver-api/usb/error-codes.rst:
``-EPROTO`` [#f1]_, [#f2]_ a) bitstuff error
b) no response packet received within the
prescribed bus turn-around time
c) unknown USB error
> Maybe in this case better to write "Video format XXX not supported" ?
The message about the lack of support for P010 is still there:
[ 5.218031] uvcvideo: Unknown video format
30313050-0000-0010-8000-00aa00389b71
The best solution would be to really convert this into something that
applications can benefit, e. g. exporting the P010 format to userspace.
> It would help quickly understand that is culprit here.
>
>
> --
> Best Regards,
> Mike Gavrilov.
Thanks,
Mauro
