V4L/DVB: videobuf: add ext_lock argument to the queue init functions

Add an ext_lock argument to the videobuf init functions. This allows
drivers to pass the vdev->lock pointer (or any other externally held lock)
to videobuf. For now all drivers just pass NULL.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c
index 2930665910b7..a32ef8eafc01 100644
--- a/drivers/media/video/videobuf-core.c
+++ b/drivers/media/video/videobuf-core.c
@@ -125,11 +125,13 @@ void videobuf_queue_core_init(struct videobuf_queue *q,
                          enum v4l2_field field,
                          unsigned int msize,
                          void *priv,
-                         struct videobuf_qtype_ops *int_ops)
+                         struct videobuf_qtype_ops *int_ops,
+                         struct mutex *ext_lock)
 {
         BUG_ON(!q);
         memset(q, 0, sizeof(*q));
         q->irqlock   = irqlock;
+        q->ext_lock  = ext_lock;
         q->dev       = dev;
         q->type      = type;
         q->field     = field;