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authorMarc Zyngier <Marc.Zyngier@arm.com>2011-11-25 17:58:19 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-11-26 21:58:54 +0000
commitabdd7b91dab2f8b2e32e90e4b7e809ffb462a662 (patch)
tree550afb8ca098ee480137eb6f63e04035d90cd69a /arch/arm
parent97371fa99c1900a84a5220639edd726b35d73931 (diff)
ARM: 7176/1: cpu_pm: register GIC PM notifier only once
When multiple GICs exist on a platform (RealView PB1176/11MP), we must make sure the PM notifier block is only registered once, otherwise we end up corrupting the PM notifier list. The fix is to only register the notifier when initializing the first GIC, as the power management functions seem to iterate over all the registered GICs. Tested on PB11MP and PB1176. Reported-by: Will Deacon <will.deacon@arm.com> Tested-by: Will Deacon <will.deacon@arm.com> Cc: Colin Cross <ccross@android.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/common/gic.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
index 0e6ae470c94..43240f315de 100644
--- a/arch/arm/common/gic.c
+++ b/arch/arm/common/gic.c
@@ -526,7 +526,8 @@ static void __init gic_pm_init(struct gic_chip_data *gic)
sizeof(u32));
BUG_ON(!gic->saved_ppi_conf);
- cpu_pm_register_notifier(&gic_notifier_block);
+ if (gic == &gic_data[0])
+ cpu_pm_register_notifier(&gic_notifier_block);
}
#else
static void __init gic_pm_init(struct gic_chip_data *gic)