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V4L/DVB (11948): uvcvideo: Ignore non-UVC trailing interface descriptors.

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Herton Ronaldo Krzesinski from Mandriva reported that one Bison Electronics
webcam exposes a non-UVC interface descriptor. Instead of failing completely,
ignore trailing non-UVC descriptors and move on.

Thanks to Herton for reporting the problem and submitting a patch proposal.

Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2009-06-09 13:07:44 -03:00 committed by Mauro Carvalho Chehab
parent ca4a345685
commit 3b27740c7d
1 changed files with 2 additions and 2 deletions
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4
drivers/media/video/uvc/uvc_driver.c
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@ -644,7 +644,7 @@ static int uvc_parse_streaming(struct uvc_device *dev,
_buflen = buflen;
/* Count the format and frame descriptors. */
while (_buflen > 2) {
while (_buflen > 2 && _buffer[1] == CS_INTERFACE) {
switch (_buffer[2]) {
case VS_FORMAT_UNCOMPRESSED:
case VS_FORMAT_MJPEG:
@ -709,7 +709,7 @@ static int uvc_parse_streaming(struct uvc_device *dev,
streaming->nformats = nformats;
/* Parse the format descriptors. */
while (buflen > 2) {
while (buflen > 2 && buffer[1] == CS_INTERFACE) {
switch (buffer[2]) {
case VS_FORMAT_UNCOMPRESSED:
case VS_FORMAT_MJPEG: