From abdd7b91dab2f8b2e32e90e4b7e809ffb462a662 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Fri, 25 Nov 2011 17:58:19 +0100 Subject: [PATCH] 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 Tested-by: Will Deacon Cc: Colin Cross Signed-off-by: Marc Zyngier Signed-off-by: Russell King --- arch/arm/common/gic.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c index 0e6ae470c94f..43240f315dea 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) -- 2.20.1