linux-kernel - Re: [PATCH 1/9] drivers/mfd/88pm860x-i2c.c: introduce missing kfree

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Message-ID: <20111226122011.GG8722@opensource.wolfsonmicro.com>
Date:	Mon, 26 Dec 2011 12:20:11 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Julia Lawall <julia.lawall@...6.fr>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>,
	kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/9] drivers/mfd/88pm860x-i2c.c: introduce missing kfree

On Mon, Dec 26, 2011 at 01:18:54PM +0100, Julia Lawall wrote:
> On Mon, 26 Dec 2011, Mark Brown wrote:

> >With this and probably a bunch of the other corrections in this series a
> >conversion to devm_kazlloc() would be a more complete fix as it prevents
> >people introducing similar missing cleanup paths in future.  Not sure if
> >spatch can generate that automatically though...

> I saw a patch for that recently, and looked into it a little bit,
> but I wasn't sure what should be done.  What are the criteria for
> using devm_kzalloc?

It's good for any allocation that lasts for the lifetime of the device -
most driver data allocated in probe() fits well, for example.
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