As pointed by smatch, there's a missing return code: drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c:485 sun6i_video_open() warn: missing error code 'ret' Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> --- drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c index 3181d0781b61..07b2161392d2 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c @@ -481,8 +481,10 @@ static int sun6i_video_open(struct file *file) goto fh_release; /* check if already powered */ - if (!v4l2_fh_is_singular_file(file)) + if (!v4l2_fh_is_singular_file(file)) { + ret = -EBUSY; goto unlock; + } ret = sun6i_csi_set_power(video->csi, true); if (ret < 0) -- 2.31.1