diff options
| author | Hans Verkuil <hverkuil@xs4all.nl> | 2009-02-14 19:58:33 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-03-16 17:32:32 -0700 |
| commit | bbbfbf6d74e6054c4f6af2dd7fe95c5551b6413a (patch) | |
| tree | 2cc7d8f243d9b3fc7e921d0f44cd8664e04f9a79 | |
| parent | ef956570e79d30cf9a25e5a1a5464f75a8989181 (diff) | |
| download | linux-stable-bbbfbf6d74e6054c4f6af2dd7fe95c5551b6413a.tar.gz | |
V4L: ivtv: fix decoder crash regression
(cherry picked from commit ac9575f75c52bcb455120f8c43376b556acba048)
The video_ioctl2 conversion of ivtv in kernel 2.6.27 introduced a bug
causing decoder commands to crash. The decoder commands should have been
handled from the video_ioctl2 default handler, ensuring correct mapping
of the argument between user and kernel space. Unfortunately they ended
up before the video_ioctl2 call, causing random crashes.
Thanks to hannes@linus.priv.at for testing and helping me track down the
cause!
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-ioctl.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/media/video/ivtv/ivtv-ioctl.c b/drivers/media/video/ivtv/ivtv-ioctl.c index 4bae38d21ef6..999f037dc10b 100644 --- a/drivers/media/video/ivtv/ivtv-ioctl.c +++ b/drivers/media/video/ivtv/ivtv-ioctl.c @@ -1750,6 +1750,18 @@ static int ivtv_default(struct file *file, void *fh, int cmd, void *arg) break; } + case IVTV_IOC_DMA_FRAME: + case VIDEO_GET_PTS: + case VIDEO_GET_FRAME_COUNT: + case VIDEO_GET_EVENT: + case VIDEO_PLAY: + case VIDEO_STOP: + case VIDEO_FREEZE: + case VIDEO_CONTINUE: + case VIDEO_COMMAND: + case VIDEO_TRY_COMMAND: + return ivtv_decoder_ioctls(file, cmd, (void *)arg); + default: return -EINVAL; } @@ -1792,18 +1804,6 @@ static long ivtv_serialized_ioctl(struct ivtv *itv, struct file *filp, ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode); return 0; - case IVTV_IOC_DMA_FRAME: - case VIDEO_GET_PTS: - case VIDEO_GET_FRAME_COUNT: - case VIDEO_GET_EVENT: - case VIDEO_PLAY: - case VIDEO_STOP: - case VIDEO_FREEZE: - case VIDEO_CONTINUE: - case VIDEO_COMMAND: - case VIDEO_TRY_COMMAND: - return ivtv_decoder_ioctls(filp, cmd, (void *)arg); - default: break; } |