From: Axel Lin <axel.lin@ingics.com>
Date: Sun, 23 Jun 2013 07:50:07 +0000 (+0800)
Subject: of/irq: Avoid calling list_first_entry() for empty list
X-Git-Tag: v3.11-rc3~21^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c0cdfaa0a5e7a346ac2f661f63f543cdc5f7cbbe;p=pandora-kernel.git

of/irq: Avoid calling list_first_entry() for empty list

list_first_entry() expects the list is not empty, we need to check if list is
empty before calling list_first_entry(). Thus use list_first_entry_or_null()
instead of list_first_entry().

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
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