From: Wu, Xia <xia.wu@intel.com>
Date: Wed, 9 Dec 2015 07:26:26 +0000 (-0200)
Subject: [media] media: videobuf2-core: Fix one __qbuf_dmabuf() error path
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9637b03251dea31d99c0742932b9fcbfa015e5f0;p=linux-beck.git

[media] media: videobuf2-core: Fix one __qbuf_dmabuf() error path

Add dma_buf_put() to decrease refcount of the dmabuf in error path if DMABUF size is smaller than the requirement.

Signed-off-by: wu xia <xia.wu@intel.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---

diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
index c5d49d7a0d76..ec5b78ee6e72 100644
--- a/drivers/media/v4l2-core/videobuf2-core.c
+++ b/drivers/media/v4l2-core/videobuf2-core.c
@@ -1220,6 +1220,7 @@ static int __qbuf_dmabuf(struct vb2_buffer *vb, const void *pb)
 		if (planes[plane].length < vb->planes[plane].min_length) {
 			dprintk(1, "invalid dmabuf length for plane %d\n",
 				plane);
+			dma_buf_put(dbuf);
 			ret = -EINVAL;
 			goto err;
 		}