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

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Date:	Wed, 23 Oct 2013 21:31:12 +0200
From:	Sebastian Reichel <sre@...ian.org>
To:	Joe Perches <joe@...ches.com>
Cc:	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, Oct 23, 2013 at 11:17:46AM -0700, Joe Perches wrote:
> 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.

I saw you sent a big patchset changing this for all drivers.
Should I drop this patch?

-- Sebastian

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