From: Will Deacon <will.deacon@arm.com>
Date: Fri, 23 Nov 2012 17:55:30 +0000 (+0100)
Subject: ARM: 7586/1: sp804: set cpumask to cpu_possible_mask for clock event device
X-Git-Tag: v3.7-rc8~23^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ea3aacf5f22c1002cac97985354658072232e280;p=pandora-kernel.git

ARM: 7586/1: sp804: set cpumask to cpu_possible_mask for clock event device

The SP804 driver statically initialises the cpumask of the clock event
device to be cpu_all_mask, which is derived from the compile-time
constant NR_CPUS. This breaks SMP_ON_UP systems where the interrupt
controller handling the sp804 doesn't have the irq_set_affinity callback
on the irq_chip, because the common timer code fails to identify the
device as cpu-local and ends up treating it as a broadcast device
instead.

This patch fixes the problem by using cpu_possible_mask at runtime,
which will correctly represent the possible CPUs when SMP_ON_UP is being
used.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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