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[media] soc-camera: remove struct soc_camera_device::video_lock

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Currently soc-camera has a per-device node lock, used for video operations
and a per-host lock for code paths, modifying host's pipeline. Manipulating
the two locks increases complexity and doesn't bring any advantages. This
patch removes the per-device lock and uses the per-host lock for all
operations.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Guennadi Liakhovetski
2012-12-24 09:31:33 -03:00
committed by Mauro Carvalho Chehab
parent 8a97d4c117
commit dd669e907c
9 changed files with 35 additions and 45 deletions
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include/media/soc_camera.h
+1 -2
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@@ -46,9 +46,8 @@ struct soc_camera_device {
int num_user_formats;
enum v4l2_field field; /* Preserve field over close() */
void *host_priv; /* Per-device host private data */
/* soc_camera.c private count. Only accessed with .video_lock held */
/* soc_camera.c private count. Only accessed with .host_lock held */
int use_count;
struct mutex video_lock; /* Protects device data */
struct file *streamer; /* stream owner */
union {
struct videobuf_queue vb_vidq;