From: Xiubo Li <Li.Xiubo@freescale.com>
Date: Mon, 19 May 2014 07:13:45 +0000 (+0800)
Subject: regmap: irq: Fix possible ZERO_SIZE_PTR pointer dereferencing error.
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~30^2~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e12892070184ee782c207f09722a93d0236be955;p=pandora-kernel.git

regmap: irq: Fix possible ZERO_SIZE_PTR pointer dereferencing error.

Since we cannot make sure the 'chip->num_regs' will always be none zero
from the users, and then if 'chip->num_regs' equals to zero by mistake
or other reasons, the kzalloc() will return ZERO_SIZE_PTR, which equals
to ((void *)16).

So this patch fix this with just checking the 'chip->num_regs' before
calling kzalloc().

This also sorts the header files in alphabetical order at the same time.

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
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