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| author | Marc Zyngier <Marc.Zyngier@arm.com> | 2011-11-25 17:58:19 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-11-26 21:58:54 +0000 |
| commit | abdd7b91dab2f8b2e32e90e4b7e809ffb462a662 (patch) | |
| tree | 550afb8ca098ee480137eb6f63e04035d90cd69a /arch/arm | |
| parent | 97371fa99c1900a84a5220639edd726b35d73931 (diff) | |
| download | linux-0-day-abdd7b91dab2f8b2e32e90e4b7e809ffb462a662.tar.gz linux-0-day-abdd7b91dab2f8b2e32e90e4b7e809ffb462a662.tar.xz | |
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.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c index 0e6ae470c94f2..43240f315dea7 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) |