linux-kernel - Re: [PATCHv4 2/3] Input: twl4030-pwrbutton: use dev

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Date:	Wed, 23 Oct 2013 11:17:46 -0700
From:	Joe Perches <joe@...ches.com>
To:	Sebastian Reichel <sre@...ian.org>
Cc:	Sebastian Reichel <sre@...g0.de>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Peter Ujfalusi <peter.ujfalusi@...com>,
	Sachin Kamat <sachin.kamat@...aro.org>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCHv4 2/3] Input: twl4030-pwrbutton: use dev_err for errors

On Wed, 2013-10-23 at 19:54 +0200, Sebastian Reichel wrote:
> Use dev_err() to output errors instead of dev_dbg().
[]
> diff --git a/drivers/input/misc/twl4030-pwrbutton.c b/drivers/input/misc/twl4030-pwrbutton.c
[]
> @@ -60,7 +60,7 @@ static int twl4030_pwrbutton_probe(struct platform_device *pdev)
>  
>  	pwr = input_allocate_device();
>  	if (!pwr) {
> -		dev_dbg(&pdev->dev, "Can't allocate power button\n");
> +		dev_err(&pdev->dev, "Can't allocate power button\n");
>  		return -ENOMEM;
>  	}

input_allocate_device uses kzalloc and it will emit a
standardized OOM message along with a dump_stack()
so this dev_err/dev_dbg is redundant and not necessary.


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