linux-kernel - Re: [PATCH 1/8] arch/mips/txx9: introduce missing kfree, iounmap

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Message-Id: <20090916.004525.74746264.anemo@mba.ocn.ne.jp>
Date:	Wed, 16 Sep 2009 00:45:25 +0900 (JST)
From:	Atsushi Nemoto <anemo@....ocn.ne.jp>
To:	julia@...u.dk
Cc:	ralf@...ux-mips.org, linux-mips@...ux-mips.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 1/8] arch/mips/txx9: introduce missing kfree, iounmap

On Tue, 15 Sep 2009 07:03:42 +0200 (CEST), Julia Lawall <julia@...u.dk> wrote:
> > +out_pdev:
> > +	platform_device_put(pdev);
> > +out_gpio:
> > +	gpio_remove(&iocled->chip);
> 
> I just noticed that the prototype of gpio_remove has __must_check
> I don't think there is anything to check here; since the thing is not 
> fully initialized here, it is unlikely to be busy.  Should there be (void) 
> in front of it?

The void casting does not silence the warning.  How about this?

	if (gpiochip_remove(&iocled->chip))
		return;

In general, memory leak would be less serious than crash or data
corruption ;)

---
Atsushi Nemoto
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