linux-kernel - Re: [PATCH] drm/mxsfb: miss err handle in probe

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Date:   Mon, 20 Jul 2020 10:53:09 +0200
From:   Stefan Agner <stefan@...er.ch>
To:     Bernard Zhao <bernard@...o.com>
Cc:     Marek Vasut <marex@...x.de>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        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>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        opensource.kernel@...o.com
Subject: Re: [PATCH] drm/mxsfb: miss err handle in probe

On 2020-06-11 14:23, Bernard Zhao wrote:
> There are three err return values in drm_fbdev_generic_setup.
> In mxsfb_probe we called this function, but didn`t handle the
> return value, this change is to add err handle, maybe make code
> a bit more readable.

This got recently changed, so I guess checking the return value isn't
required anymore:
https://patchwork.freedesktop.org/patch/msgid/20200408082641.590-11-tzimmermann@suse.de

--
Stefan

> 
> Signed-off-by: Bernard Zhao <bernard@...o.com>
> ---
>  drivers/gpu/drm/mxsfb/mxsfb_drv.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> index 497cf443a9af..a45f3b85f725 100644
> --- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> +++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> @@ -415,7 +415,9 @@ static int mxsfb_probe(struct platform_device *pdev)
>  	if (ret)
>  		goto err_unload;
>  
> -	drm_fbdev_generic_setup(drm, 32);
> +	ret = drm_fbdev_generic_setup(drm, 32);
> +	if (ret)
> +		goto err_unload;
>  
>  	return 0;