linux-kernel - Re: [PATCH] spi: loopback-test: Fix kfree() NULL pointer error.

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Message-ID: <20170628191452.vjylivjghzzpk3g7@sirena.org.uk>
Date:   Wed, 28 Jun 2017 20:14:52 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Arvind Yadav <arvind.yadav.cs@...il.com>
Cc:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] spi: loopback-test: Fix kfree() NULL pointer error.

On Tue, Jun 20, 2017 at 03:00:53PM +0530, Arvind Yadav wrote:
> Here, rx/tx allocation can fail. So avoid kvfree call
> with NULL pointer.

It's not an error to free NULL, the APIs will just ignore the value.

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