linux-sunxi.lists.linux.dev archive mirror
 help / color / mirror / Atom feed
From: yong <yong.deng@magewell.com>
To: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: linuxarm@huawei.com, mauro.chehab@huawei.com,
	Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Maxime Ripard <mripard@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
	linux-sunxi@lists.linux.dev
Subject: Re: [PATCH 04/11] media: sun6i-csi: add a missing return code
Date: Thu, 17 Jun 2021 13:37:40 +0800	[thread overview]
Message-ID: <20210617133740.00004d0a@magewell.com> (raw)
In-Reply-To: <525bad50008338d96fb71e724675061ffa07ff87.1623846327.git.mchehab+huawei@kernel.org>

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@kernel.org> 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@kernel.org>
> ---
>  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

      reply	other threads:[~2021-06-17  6:38 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-16 12:28 [PATCH 00/11] Address some smatch warnings Mauro Carvalho Chehab
2021-06-16 12:28 ` [PATCH 04/11] media: sun6i-csi: add a missing return code Mauro Carvalho Chehab
2021-06-17  5:37   ` yong [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210617133740.00004d0a@magewell.com \
    --to=yong.deng@magewell.com \
    --cc=jernej.skrabec@gmail.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-media@vger.kernel.org \
    --cc=linux-sunxi@lists.linux.dev \
    --cc=linuxarm@huawei.com \
    --cc=mauro.chehab@huawei.com \
    --cc=mchehab+huawei@kernel.org \
    --cc=mchehab@kernel.org \
    --cc=mripard@kernel.org \
    --cc=wens@csie.org \
    --subject='Re: [PATCH 04/11] media: sun6i-csi: add a missing return code' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).