diff options
| author | Hans Verkuil <hverkuil@xs4all.nl> | 2007-07-10 21:58:33 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-07-18 21:24:47 +0400 |
| commit | f885969196da6ae905162c0d1c5f0553de12cb40 (patch) | |
| tree | 3d23cbba88366834d05d8b6a63c6889caf789b37 /drivers/media/video/ivtv/ivtv-driver.h | |
| parent | 0901973f4bde9c1004795c9c2321bdc51f3996f1 (diff) | |
| download | linux-f885969196da6ae905162c0d1c5f0553de12cb40.tar.xz | |
V4L/DVB (5842): ivtv: Add locking to ensure stream setup is atomic.
Starting an MPEG and VBI capture simultaneously caused errors in
the VBI setup: this setup was done twice when it should be done
only for the first stream that is opened.
Added a mutex to prevent this from happening.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/ivtv/ivtv-driver.h')
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-driver.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/media/video/ivtv/ivtv-driver.h b/drivers/media/video/ivtv/ivtv-driver.h index 48afd4270cbf..65ebddab3fe1 100644 --- a/drivers/media/video/ivtv/ivtv-driver.h +++ b/drivers/media/video/ivtv/ivtv-driver.h @@ -722,6 +722,7 @@ struct ivtv { int search_pack_header; spinlock_t dma_reg_lock; /* lock access to DMA engine registers */ + struct mutex serialize_lock; /* lock used to serialize starting streams */ /* User based DMA for OSD */ struct ivtv_user_dma udma; |