Hi,
It does not mean there is a error. As the comment, it just check if the
csi is powered.
On Wed, 16 Jun 2021 14:28:30 +0200
Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> wrote:
> 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)
Thanks
