linux-kernel - Re: [PATCH] arch: cris: arch-v32: drivers: axisflashmap.c: Cleaning up inconsistent NULL checks

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Message-ID: <20140523070016.GG9198@axis.com>
Date:	Fri, 23 May 2014 09:00:16 +0200
From:	Jesper Nilsson <jesper.nilsson@...s.com>
To:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
Cc:	Mikael Starvik <starvik@...s.com>,
	Jesper Nilsson <jespern@...s.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	linux-cris-kernel <linux-cris-kernel@...s.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arch: cris: arch-v32: drivers: axisflashmap.c:
 Cleaning up inconsistent NULL checks

On Fri, May 23, 2014 at 12:00:09AM +0200, Rickard Strandqvist wrote:
> Cleaning up inconsistent NULL checks.
> There is otherwise a risk of a possible null pointer dereference.
> 
> Was largely found by using a static code analysis program called cppcheck.

... and is a false positive.

We can't enter this if-block unless ptable_head is set,
which is only set if main_mtd is set.

It might be useful to add it anyways, but there's a refactoring
needed for the axisflashmaps, so I'll keep it for then.

/^JN - Jesper Nilsson
-- 
               Jesper Nilsson -- jesper.nilsson@...s.com
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