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| author | Shuah Khan <shuahkh@osg.samsung.com> | 2016-02-11 21:41:29 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-02-27 08:46:55 -0300 |
| commit | 77fa4e072998705883c4dc672963b4bf7483cea9 (patch) | |
| tree | 6b5d93eda723017ebb2bd3129ff4d2da86ffb990 /drivers/media/v4l2-core/videobuf2-core.c | |
| parent | 50512333f2d7f09fc108e062278a82d2cbc6581c (diff) | |
| download | op-kernel-dev-77fa4e072998705883c4dc672963b4bf7483cea9.zip op-kernel-dev-77fa4e072998705883c4dc672963b4bf7483cea9.tar.gz | |
[media] media: Change v4l-core to check if source is free
Change s_input, s_fmt, s_tuner, s_frequency, querystd, s_hw_freq_seek,
and vb2_core_streamon interfaces that alter the tuner configuration to
check if it is free, by calling v4l_enable_media_source().
If source isn't free, return -EBUSY.
v4l_disable_media_source() is called from v4l2_fh_exit() to release
tuner (source).
vb2_core_streamon() uses v4l_vb2q_enable_media_source().
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/v4l2-core/videobuf2-core.c')
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index dab9408..5d016f4 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -25,6 +25,7 @@ #include <linux/kthread.h> #include <media/videobuf2-core.h> +#include <media/v4l2-mc.h> #include <trace/events/vb2.h> @@ -1887,6 +1888,9 @@ int vb2_core_streamon(struct vb2_queue *q, unsigned int type) * are available. */ if (q->queued_count >= q->min_buffers_needed) { + ret = v4l_vb2q_enable_media_source(q); + if (ret) + return ret; ret = vb2_start_streaming(q); if (ret) { __vb2_queue_cancel(q); |
