kernel-ark/drivers/media
Márton Németh 9086c7b994 V4L/DVB (11573): uvcvideo: Prevent invormation loss with removing implicit casting
The uvcvideo driver supports only one input, which is input 0. For all
other input index the return value shall be EINVAL. This patch fixes the
problem when the value 0x80000000 was incorrectly casted and treated as
a zero value.

The patch was tested with v4l-test 0.10 [2] with CNF7129 webcam found on
EeePC 901.

References:
[1] V4L2 API specification, revision 0.24
    http://v4l2spec.bytesex.org/spec/r11217.htm

[2] v4l-test: Test environment for Video For Linux Two API
    http://v4l-test.sourceforge.net/

[Modified by Laurent Pinchart]

Invalid input value (u32)-1 would be accepted due to integer overflow. Make
sure the driver rejects it and returns -EINVAL.

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-06-16 18:20:37 -03:00
..
common Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-04-03 15:24:35 -07:00
dvb V4L/DVB (11571): Add Elgato EyeTV DTT deluxe to dibcom driver 2009-06-16 18:20:37 -03:00
radio V4L/DVB (11675): ivtv/radio: fix V4L2_TUNER_MODE/V4L2_TUNER_SUB confusion 2009-05-09 18:53:16 -03:00
video V4L/DVB (11573): uvcvideo: Prevent invormation loss with removing implicit casting 2009-06-16 18:20:37 -03:00
Kconfig V4L/DVB (10633): DAB: fix typo 2009-03-30 12:42:49 -03:00
Makefile