linux-kernel - Re: [PATCH] i2c: tegra: fix a possible NULL dereference

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Message-ID: <20151112125422.GA3758@Red>
Date:	Thu, 12 Nov 2015 13:54:22 +0100
From:	LABBE Corentin <montjoie.mailing@...il.com>
To:	Thierry Reding <thierry.reding@...il.com>
Cc:	LABBE Corentin <clabbe.montjoie@...il.com>, gnurou@...il.com,
	ldewangan@...dia.com, swarren@...dotorg.org, wsa@...-dreams.de,
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-tegra@...r.kernel.org
Subject: Re: [PATCH] i2c: tegra: fix a possible NULL dereference

On Thu, Nov 12, 2015 at 01:29:23PM +0100, Thierry Reding wrote:
> On Thu, Nov 12, 2015 at 08:26:03AM +0100, LABBE Corentin wrote:
> > of_match_device could return NULL, and so cause a NULL pointer
> 
> No. There is no way that of_match_device() can ever fail. The driver
> core uses the same table to match the OF device to the driver, so the
> only case where of_match_device() would return NULL is if no match was
> found, in which case the tegra_i2c_probe() function would never have
> been called in the first place.
> 
> Thierry
> 

In a parallel thread for i2c-rcar, the conclusion was different.
https://lkml.org/lkml/2015/11/12/83

Regards

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