[media] media: s3c-camif: use vb2_ops_wait_prepare/finish helper

This patch drops driver specific wait_prepare() and
wait_finish() callbacks from vb2_ops and instead uses
the the helpers vb2_ops_wait_prepare/finish() provided
by the vb2 core, the lock member of the queue needs
to be initalized to a mutex so that vb2 helpers
vb2_ops_wait_prepare/finish() can make use of it.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Cc: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

1 files changed, 3 insertions, 14 deletions

diff --git a/drivers/media/platform/s3c-camif/camif-capture.c b/drivers/media/platform/s3c-camif/camif-capture.c
index aa40c8269ab8..54479d60cc0d 100644
--- a/drivers/media/platform/s3c-camif/camif-capture.c
+++ b/drivers/media/platform/s3c-camif/camif-capture.c
@@ -536,24 +536,12 @@ static void buffer_queue(struct vb2_buffer *vb)
         spin_unlock_irqrestore(&camif->slock, flags);
 }
 
-static void camif_lock(struct vb2_queue *vq)
-{
-        struct camif_vp *vp = vb2_get_drv_priv(vq);
-        mutex_lock(&vp->camif->lock);
-}
-
-static void camif_unlock(struct vb2_queue *vq)
-{
-        struct camif_vp *vp = vb2_get_drv_priv(vq);
-        mutex_unlock(&vp->camif->lock);
-}
-
 static const struct vb2_ops s3c_camif_qops = {
         .queue_setup     = queue_setup,
         .buf_prepare     = buffer_prepare,
         .buf_queue       = buffer_queue,
-        .wait_prepare    = camif_unlock,
-        .wait_finish     = camif_lock,
+        .wait_prepare    = vb2_ops_wait_prepare,
+        .wait_finish     = vb2_ops_wait_finish,
         .start_streaming = start_streaming,
         .stop_streaming  = stop_streaming,
 };
@@ -1161,6 +1149,7 @@ int s3c_camif_register_video_node(struct camif_dev *camif, int idx)
         q->buf_struct_size = sizeof(struct camif_buffer);
         q->drv_priv = vp;
         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+        q->lock = &vp->camif->lock;
 
         ret = vb2_queue_init(q);
         if (ret)