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Commit 31901a07 authored by Marek Szyprowski's avatar Marek Szyprowski Committed by Mauro Carvalho Chehab
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[media] v4l2: vb2: one more fix for REQBUFS() 



Return immediately if the target number of buffers is the same as
the current one and memory access type doesn't change.

Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent a9bb36aa

drivers/media/video/videobuf2-core.c

+7 −0
Original line number Diff line number Diff line
@@ -488,6 +488,13 @@ int vb2_reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req) 
		return -EINVAL;

	}



	/*

	 * If the same number of buffers and memory access method is requested

	 * then return immediately.

	 */

	if (q->memory == req->memory && req->count == q->num_buffers)

		return 0;



	if (req->count == 0 || q->num_buffers != 0 || q->memory != req->memory) {

		/*

		 * We already have buffers allocated, so first check if they