Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-06 03:51:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

ARM: 7176/1: cpu_pm: register GIC PM notifier only once

Browse Source 
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>
This commit is contained in:
Marc Zyngier 2011-11-25 17:58:19 +01:00 committed by Russell King
parent 97371fa99c
commit abdd7b91da
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm/common/gic.c
View File

@ -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)