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From: LABBE Corentin <montjoie.mailing@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: LABBE Corentin <clabbe.montjoie@gmail.com>,
	gnurou@gmail.com, ldewangan@nvidia.com, swarren@wwwdotorg.org,
	wsa@the-dreams.de, linux-i2c@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org
Subject: Re: [PATCH] i2c: tegra: fix a possible NULL dereference
Date: Thu, 12 Nov 2015 13:54:22 +0100	[thread overview]
Message-ID: <20151112125422.GA3758@Red> (raw)
In-Reply-To: <20151112122923.GA31671@ulmo>

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

  reply	other threads:[~2015-11-12 12:54 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-12  7:26 [PATCH] i2c: tegra: fix a possible NULL dereference LABBE Corentin
2015-11-12 12:29 ` Thierry Reding
2015-11-12 12:54   ` LABBE Corentin [this message]
2015-11-12 13:28     ` Thierry Reding
2015-11-12 13:28       ` Thierry Reding
2015-11-12 13:45       ` Uwe Kleine-König
     [not found]         ` <20151112134519.GJ24008-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2015-11-12 13:55           ` Thierry Reding
2015-11-12 13:55             ` Thierry Reding
2015-11-12 14:54             ` LABBE Corentin
2015-11-12 16:14               ` Thierry Reding
2015-11-12 16:14                 ` Thierry Reding
2016-01-23 11:07               ` Wolfram Sang
2016-01-23 11:07                 ` Wolfram Sang
2016-01-23 10:56           ` Wolfram Sang
2016-01-23 10:56             ` Wolfram Sang
2015-11-12 13:40   ` Jon Hunter
2015-11-12 13:40     ` Jon Hunter
2015-11-12 13:55     ` Thierry Reding

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