V4L/DVB (7501): soc-camera: use a spinlock for videobuffer queue

All drivers should provide a spinlock to be used in videobuf operations.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>
Reviewed-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h
index 80e1193c07d5..6a8c8be7a1ae 100644
--- a/include/media/soc_camera.h
+++ b/include/media/soc_camera.h
@@ -48,6 +48,7 @@ struct soc_camera_device {
 struct soc_camera_file {
         struct soc_camera_device *icd;
         struct videobuf_queue vb_vidq;
+        spinlock_t *lock;
 };
 
 struct soc_camera_host {
@@ -73,6 +74,8 @@ struct soc_camera_host_ops {
         int (*try_bus_param)(struct soc_camera_device *, __u32);
         int (*set_bus_param)(struct soc_camera_device *, __u32);
         unsigned int (*poll)(struct file *, poll_table *);
+        spinlock_t* (*spinlock_alloc)(struct soc_camera_file *);
+        void (*spinlock_free)(spinlock_t *);
 };
 
 struct soc_camera_link {