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SubjectRe: [PROBLEM] uvcvideo: Failed to query (GET_INFO) UVC control
Hello Jeffrin,

On Sat, Dec 07, 2019 at 11:51:52PM +0530, Jeffrin Jose wrote:
> hello,
>
> i get this output piece from "dmesg -l err" of kernel 5.4.2
>
>
> -------------------x---------------------------x------------------
> uvcvideo: Failed to query (GET_INFO) UVC control 6 on unit 1: -32 (exp. 1).
> uvcvideo: Failed to query (GET_INFO) UVC control 7 on unit 1: -32 (exp. 1).
> -------------------x----------------------------x-----------------
>
> Additional information:
> Linux debian 5.4.2 #17 SMP Sat Dec 7 01:39:12 IST 2019 x86_64 GNU/Linux
>
> Relevant file:
> drivers/media/usb/uvc/uvc_video.c

Does the camera otherwise fail to operate correctly ? Was the problem
present in older kernel versions, or did it appear with v5.4.2 ? Are the
above messages output every time you plug the camera (or load the driver
in case the camera is built in), or only randomly ? What is the exact
camera model, and could you please send me the lsusb -v output for it
(running as root if possible) ?

--
Regards,

Laurent Pinchart

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