[RFC PATCH 4/6] videobuf2-core: require q->lock

[Hans Verkuil]

From: Hans Verkuil <hansv...@cisco.com>

Refuse to initialize a vb2 queue if there is no lock specified.

Signed-off-by: Hans Verkuil <hansv...@cisco.com>
---
 drivers/media/common/videobuf2/videobuf2-core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/common/videobuf2/videobuf2-core.c 
b/drivers/media/common/videobuf2/videobuf2-core.c
index d3f7bb33a54d..3b89ec5e0b2f 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -2002,6 +2002,7 @@ int vb2_core_queue_init(struct vb2_queue *q)
        if (WARN_ON(!q)                   ||
            WARN_ON(!q->ops)              ||
            WARN_ON(!q->mem_ops)          ||
+           WARN_ON(!q->lock)             ||
            WARN_ON(!q->type)             ||
            WARN_ON(!q->io_modes)         ||
            WARN_ON(!q->ops->queue_setup) ||
-- 
2.17.0