From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 3 May 2012 10:22:06 +0000 (+0200)
Subject: gpio: mpc8xxx: Prevent NULL pointer deref in demux handler
X-Git-Tag: v3.5-rc1~93^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d6de85e85edcc38c9edcde45a0a568818fcddc13;p=pandora-kernel.git

gpio: mpc8xxx: Prevent NULL pointer deref in demux handler

commit cfadd838(powerpc/8xxx: Fix interrupt handling in MPC8xxx GPIO
driver) added an unconditional call of chip->irq_eoi() to the demux
handler.

This leads to a NULL pointer derefernce on MPC512x platforms which use
this driver as well.

Make it conditional.

Reported-by: Thomas Wucher <thwucher@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Felix Radensky <felix@embedded-sol.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: stable@vger.kernel.org
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---

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