From 3b27740c7de0fd59032c723ad326926c97383e95 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Tue, 9 Jun 2009 13:07:44 -0300 Subject: [PATCH] V4L/DVB (11948): uvcvideo: Ignore non-UVC trailing interface descriptors. 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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_driver.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c index f75451269518..89927b7aec28 100644 --- a/drivers/media/video/uvc/uvc_driver.c +++ b/drivers/media/video/uvc/uvc_driver.c @@ -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: -- GitLab