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[5.11,324/601] media: platform: sunxi: sun6i-csi: fix error return code of sun6i_video_start_streaming()

Message ID 20210512144838.480000482@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman May 12, 2021, 2:46 p.m. UTC 
From: Jia-Ju Bai <baijiaju1990@gmail.com>

[ Upstream commit f3d384e36630e2a552d874e422835606d9cf230a ]

When sun6i_video_remote_subdev() returns NULL to subdev, no error return
code of sun6i_video_start_streaming() is assigned.
To fix this bug, ret is assigned with -EINVAL in this case.

Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Fixes: 5cc7522d8965 ("media: sun6i: Add support for Allwinner CSI V3s")
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
index b55de9ab64d8..3181d0781b61 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
@@ -151,8 +151,10 @@  static int sun6i_video_start_streaming(struct vb2_queue *vq, unsigned int count)
 	}
 
 	subdev = sun6i_video_remote_subdev(video, NULL);
-	if (!subdev)
+	if (!subdev) {
+		ret = -EINVAL;
 		goto stop_media_pipeline;
+	}
 
 	config.pixelformat = video->fmt.fmt.pix.pixelformat;
 	config.code = video->mbus_code;