linux-kernel - Re: [PATCH 1/1] drm/bridge: imx93-mipi-dsi: Use dev_err

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Date: Tue, 28 May 2024 13:50:07 +0200
From: Alexander Stein <alexander.stein@...tq-group.com>
To: Andrzej Hajda <andrzej.hajda@...el.com>, Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, Laurent Pinchart <Laurent.pinchart@...asonboard.com>, Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, 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>, Liu Ying <victor.liu@....com>
Cc: dri-devel@...ts.freedesktop.org, imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] drm/bridge: imx93-mipi-dsi: Use dev_err_probe

Hi,

thanks for your feedback.

Am Dienstag, 28. Mai 2024, 12:02:29 CEST schrieb Liu Ying:
> On 05/28/2024, Alexander Stein wrote:
> > Although very unlike to occur (media_blk_ctrl needs 'syscon' compatible
> > removed), it lines up with the other error paths in probe function.
> > 
> > Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
> > ---
> >  drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c | 8 +++-----
> >  1 file changed, 3 insertions(+), 5 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c b/drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c
> > index 2347f8dd632f9..8331db3b4f054 100644
> > --- a/drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c
> > +++ b/drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c
> > @@ -841,11 +841,9 @@ static int imx93_dsi_probe(struct platform_device *pdev)
> >  		return -ENOMEM;
> >  
> >  	dsi->regmap = syscon_regmap_lookup_by_phandle(np, "fsl,media-blk-ctrl");
> > -	if (IS_ERR(dsi->regmap)) {
> > -		ret = PTR_ERR(dsi->regmap);
> > -		dev_err(dev, "failed to get block ctrl regmap: %d\n", ret);
> > -		return ret;
> > -	}
> > +	if (IS_ERR(dsi->regmap))
> > +		return dev_err_probe(dev, PTR_ERR(dsi->regmap),
> > +				     "failed to get block ctrl regmap");
> 
> Missing \n.
> 
> And, a build warning:
> drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c: In function ‘imx93_dsi_probe’:
> drivers/gpu/drm/bridge/imx/imx93-mipi-dsi.c:837:13: warning: unused variable ‘ret’ [-Wunused-variable]
>   837 |         int ret;
>       |             ^~~
> 

Nice catch. Thanks. I'll send v2 tomorrow.

Best regards,
Alexander
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