Question about drivers/media/usb/uvc/uvc_v4l2.c

[Shaobo He <shaobo@xxxxxxxxxxx>]

Hello everyone,

This is Shaobo from Utah again. I've been bugging the mailing list with my 
patches. I have a quick question about a function in 
`drivers/media/usb/uvc/uvc_v4l2.c`. In `uvc_v4l2_try_format`, can 
`stream->nformats` be 0? I saw that in other files, this field could be zero 
which is considered as error cases. I was wondering if it's true for this 
function, too.

Thanks,
Shaobo