linux-kernel - Re: [PATCH] Make gpiochip label const

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Message-Id: <200808200850.41758.david-b@pacbell.net>
Date:	Wed, 20 Aug 2008 08:50:41 -0700
From:	David Brownell <david-b@...bell.net>
To:	Dmitry Baryshkov <dbaryshkov@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Make gpiochip label const

On Wednesday 20 August 2008, Dmitry Baryshkov wrote:
> > I don't recall seeing such warnings and I cannot make them happen with
> > drivers/gpio/gpiolib.c or with drivers/gpio/max732x.c or with
> > drivers/gpio/pca953x.c.  So we still don't know what this patch
> > does :(
> 
> Because both mentioned drivers set gpiochip->label to non-const string.
> You can check arch/arm/common/scoop.c for example of driver showing
> different behaviour:

You're doing it wrong -- in a small way, not a big one.  Instead of

	devptr->gpio.label = dev_name(&pdev->dev);

do

	devptr->gpio.label = "scoop";
	devptr->gpio.dev = &pdev->dev;

No warnings generated that way, and another field is set up...

- Dave

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