Message-ID: <50220779.9000206@metafoo.de>
Date: Wed, 08 Aug 2012 08:30:17 +0200
From: Lars-Peter Clausen <lars@metafoo.de>
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To: Venu Byravarasu <vbyravarasu@nvidia.com>
CC: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: question on devm_kfree
References: <5021FF92.8030904@nvidia.com>
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On 08/08/2012 07:56 AM, Venu Byravarasu wrote:
> As per comments related to devm_kzalloc, memory allocated using it is
> freed automatically.
> However there is a function called devm_kfree, comment section of which
> says that it is used to free memory allocated using devm_kzalloc().
> If memory allocated by devm_kzalloc is freed automatically, what's the
> need & significance of devm_kfree?
> 
> Thanks,
> Venu
>

Hi,

Memory allocated with devm_kzalloc is freed at the end of the lifetime of the
device it is attached to. If you for some reason want to free allocated with
memory devm_kzalloc before that of the lifetime of the device can use devm_kfree.


- Lars
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