linux-kernel - Re: [PATCH] media: imx: imx8mq-mipi

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Date:   Fri, 28 Jan 2022 14:52:17 +0100
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     Muhammad Usama Anjum <usama.anjum@...labora.com>
Cc:     Steve Longerbeam <slongerbeam@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Martin Kepplinger <martink@...teo.de>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        linux-staging@...ts.linux.dev, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com,
        linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org
Subject: Re: [PATCH] media: imx: imx8mq-mipi_csi2: Remove unneeded code

On 28.01.2022 18:36:49, Muhammad Usama Anjum wrote:
> ret is constant in imx8mq_mipi_csi_pm_suspend(). This function cannot
> return error. Remove the return variable. Simplify other functions which
> are using this function.
> 
> Fixes: f0c2ba1ed4ad ("media: imx: imx8mq-mipi_csi2: fix system resume")
> Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
> ---
>  drivers/staging/media/imx/imx8mq-mipi-csi2.c | 16 ++++------------
>  1 file changed, 4 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/staging/media/imx/imx8mq-mipi-csi2.c b/drivers/staging/media/imx/imx8mq-mipi-csi2.c
> index 3b9fa75efac6b..c992b845e63d1 100644
> --- a/drivers/staging/media/imx/imx8mq-mipi-csi2.c
> +++ b/drivers/staging/media/imx/imx8mq-mipi-csi2.c
[...]
>  static int imx8mq_mipi_csi_pm_resume(struct device *dev)
> @@ -742,15 +739,12 @@ static int __maybe_unused imx8mq_mipi_csi_suspend(struct device *dev)
>  {
>  	struct v4l2_subdev *sd = dev_get_drvdata(dev);
>  	struct csi_state *state = mipi_sd_to_csi2_state(sd);
> -	int ret;
>  
> -	ret = imx8mq_mipi_csi_pm_suspend(dev);
> -	if (ret)
> -		return ret;
> +	imx8mq_mipi_csi_pm_suspend(dev);
>  
>  	state->state |= ST_SUSPENDED;


what about this flag?

Marc
>  
> -	return ret;
> +	return 0;
>  }


-- 
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