CVS commit: src/sys/dev/usb

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Sun Jan  9 18:27:23 UTC 2022

Modified Files:
        src/sys/dev/usb: uvideo.c

Log Message:
uvideo(4): Fix USB interface numbering.

Don't try to be clever and count -- just use bInterfaceNumber.

The previous logic to count interface descriptors failed to consider
interfaces with alternate settings, which led it to pass an invalid
interface number to usbd_device2interface_handle.

It is simpler to just use the recorded bInterfaceNumber, which is
guaranteed by the USB spec to be zero-indexed and below
bNumInterfaces as we need.


To generate a diff of this commit:
cvs rdiff -u -r1.63 -r1.64 src/sys/dev/usb/uvideo.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.