From: Marek Szyprowski Date: Thu, 14 Apr 2011 10:17:44 +0000 (-0300) Subject: [media] media: vb2: correct queue initialization order X-Git-Tag: v2.6.39-rc6~40^2 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=13b140953ab4fd86e2065adfef892fe833986ffa [media] media: vb2: correct queue initialization order q->memory entry is initialized to late, so if allocation of memory buffers fails, the buffers might not be freed correctly (q->memory is tested in __vb2_free_mem, which can be called before setting q->memory). Reported-by: Kamil Debski Signed-off-by: Marek Szyprowski Signed-off-by: Kyungmin Park CC: Pawel Osciak Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/videobuf2-core.c b/drivers/media/video/videobuf2-core.c index 09d792d2edfd..6ba1461d51ef 100644 --- a/drivers/media/video/videobuf2-core.c +++ b/drivers/media/video/videobuf2-core.c @@ -525,6 +525,7 @@ int vb2_reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req) num_buffers = min_t(unsigned int, req->count, VIDEO_MAX_FRAME); memset(plane_sizes, 0, sizeof(plane_sizes)); memset(q->alloc_ctx, 0, sizeof(q->alloc_ctx)); + q->memory = req->memory; /* * Ask the driver how many buffers and planes per buffer it requires. @@ -566,8 +567,6 @@ int vb2_reqbufs(struct vb2_queue *q, struct v4l2_requestbuffers *req) ret = num_buffers; } - q->memory = req->memory; - /* * Return the number of successfully allocated buffers * to the userspace.