From 896f38f582730a19eb49677105b4fe4c0270b82e Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Mon, 17 Sep 2012 14:59:30 -0300 Subject: [PATCH] [media] videobuf2-core: Replace BUG_ON and return an error at vb2_queue_init() This replaces BUG_ON() calls with WARN_ON(), and returns EINVAL if some parameter is NULL, as suggested by Jonathan and Mauro. The BUG_ON() call is too drastic to be used in this case. See the full discussion here: http://www.spinics.net/lists/linux-media/msg52462.html Signed-off-by: Ezequiel Garcia Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/videobuf2-core.c | 19 +++++++++++-------- include/media/videobuf2-core.h | 2 +- 2 files changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 59ed5223393b..e6a26b433e87 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -1738,14 +1738,17 @@ EXPORT_SYMBOL_GPL(vb2_poll); */ int vb2_queue_init(struct vb2_queue *q) { - BUG_ON(!q); - BUG_ON(!q->ops); - BUG_ON(!q->mem_ops); - BUG_ON(!q->type); - BUG_ON(!q->io_modes); - - BUG_ON(!q->ops->queue_setup); - BUG_ON(!q->ops->buf_queue); + /* + * Sanity check + */ + if (WARN_ON(!q) || + WARN_ON(!q->ops) || + WARN_ON(!q->mem_ops) || + WARN_ON(!q->type) || + WARN_ON(!q->io_modes) || + WARN_ON(!q->ops->queue_setup) || + WARN_ON(!q->ops->buf_queue)) + return -EINVAL; INIT_LIST_HEAD(&q->queued_list); INIT_LIST_HEAD(&q->done_list); diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 8dd9b6cc296b..e04252a9fea6 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -324,7 +324,7 @@ int vb2_reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req); int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create); int vb2_prepare_buf(struct vb2_queue *q, struct v4l2_buffer *b); -int vb2_queue_init(struct vb2_queue *q); +int __must_check vb2_queue_init(struct vb2_queue *q); void vb2_queue_release(struct vb2_queue *q); -- 2.30.2