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, 2 deletions

diff --git a/drivers/media/video/videobuf-dma-contig.c b/drivers/media/video/videobuf-dma-contig.c
index 047054f7960..4d0a723b744 100644
--- a/drivers/media/video/videobuf-dma-contig.c
+++ b/drivers/media/video/videobuf-dma-contig.c
@@ -349,10 +349,11 @@ void videobuf_queue_dma_contig_init(struct videobuf_queue *q,
                                     enum v4l2_buf_type type,
                                     enum v4l2_field field,
                                     unsigned int msize,
-                                    void *priv)
+                                    void *priv,
+                                    struct mutex *ext_lock)
 {
         videobuf_queue_core_init(q, ops, dev, irqlock, type, field, msize,
-                                 priv, &qops);
+                                 priv, &qops, ext_lock);
 }
 EXPORT_SYMBOL_GPL(videobuf_queue_dma_contig_init);