From: James Hogan <james.hogan@imgtec.com>
Date: Fri, 28 Jun 2013 12:56:02 +0000 (+0100)
Subject: metag: smp: enable irqs after set_cpu_online
X-Git-Tag: v3.11-rc1~79^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=234c7f1ac109ad1af4ae410463d03ccebf3d6657;p=pandora-kernel.git

metag: smp: enable irqs after set_cpu_online

In secondary_start_kernel() interrupts should be enabled with
local_irq_enable() after the cpu is marked as online with
set_cpu_online(). Otherwise it's possible for a timer interrupt to
trigger a softirq, which if the cpu is marked as offline may have it's
affinity altered.

Reported-by: Kirill Tkhai <tkhai@yandex.ru>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Kirill Tkhai <tkhai@yandex.ru>
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