linux-kernel - Re: [PATCH 12/24] media/video: fix dangling pointers

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Message-ID: <20100322213645.34257722@hyperion.delvare>
Date:	Mon, 22 Mar 2010 21:36:45 +0100
From:	Jean Delvare <khali@...ux-fr.org>
To:	Wolfram Sang <w.sang@...gutronix.de>
Cc:	Hans Verkuil <hverkuil@...all.nl>, kernel-janitors@...r.kernel.org,
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	linux-media@...r.kernel.org,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: Re: [PATCH 12/24] media/video: fix dangling pointers

Replying to myself...

On Sun, 21 Mar 2010 14:46:55 +0100, Jean Delvare wrote:
> I get the feeling that this would be a job for managed resources as
> some drivers already do for I/O ports and IRQs. Managed resources don't
> care about symmetry of allocation and freeing, by design (so it can
> violate point 1 above.) Aha! Isn't it exactly what devm_kzalloc() is
> all about?

Thinking about it again, this really only addresses the calls to
kfree(), not the calls to i2c_set_clientdata(), so apparently I'm quite
off-topic for this discussion. I still think that moving drivers to
managed resources is the way to go, but that's a different issue.

-- 
Jean Delvare
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