From: Steven Miao <realmz6@gmail.com>
Date: Fri, 25 Nov 2011 06:25:30 +0000 (+0800)
Subject: blackfin: smp: fix msg queue overflow issue
X-Git-Tag: v3.3-rc1~111^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a2eff9dd8bca6d03bc3c87790bac3fdb4fe6dbf0;p=pandora-kernel.git

blackfin: smp: fix msg queue overflow issue

disable preemption when icache flush and use wait mode cross call, hold the msg
queue lock while handle cross function call to avoid overflow

Signed-off-by: Steven Miao <realmz6@gmail.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
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