From: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Date: Tue, 16 Sep 2014 13:23:15 +0000 (+0300)
Subject: gpio: Fix potential NULL handler data in chained irqchip handler
X-Git-Tag: fixes-for-v3.18-merge-window~69^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=324b0398781e7afb846378dd2d8a4374faaf236b;p=pandora-kernel.git

gpio: Fix potential NULL handler data in chained irqchip handler

There is possibility with misconfigured pins that interrupt occurs instantly
after setting irq_set_chained_handler() in gpiochip_set_chained_irqchip().
Now if handler gets called before irq_set_handler_data() the handler gets
NULL handler data.

Fix this by moving irq_set_handler_data() call before
irq_set_chained_handler() in gpiochip_set_chained_irqchip().

Cc: Stable <stable@vger.kernel.org> # 3.15+
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
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