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authorLokesh Vutla <lokeshvutla@ti.com>2013-03-13 06:52:33 +0000
committerJon Medhurst <tixy@linaro.org>2013-07-17 11:12:14 +0100
commit8aa6a97721cc5146ee3e70cd477e10c4d0047d0c (patch)
tree29c77378ca05720c57f8612ed39fb24a8a3d1e46
parent8bb495e3f02401ee6f76d1b1d77f3ac9f079e376 (diff)
downloadmp-master-hw-bkpt-fix.tar.gz
ARM: hw_breakpoint: Enable debug powerdown only if system supports 'has_ossr'master-hw-bkpt-fix
Commit {9a6eb31 ARM: hw_breakpoint: Debug powerdown support for self-hosted debug} introduces debug powerdown support for self-hosted debug. While merging the patch 'has_ossr' check was removed which was needed for hardwares which doesn't support self-hosted debug. Pandaboard (A9) is one such hardware and Dietmar's orginial patch did mention this issue. Without that check on Panda with CPUIDLE enabled, a flood of below messages thrown. [ 3.597930] hw-breakpoint: CPU 0 failed to disable vector catch [ 3.597991] hw-breakpoint: CPU 1 failed to disable vector catch So restore that check back to avoid the mentioned issue. Cc: Dietmar Eggemann <dietmar.eggemann@arm.com> Cc: Will Deacon <will.deacon@arm.com> Reported-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
-rw-r--r--arch/arm/kernel/hw_breakpoint.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c
index 1fd749e..1b80311 100644
--- a/arch/arm/kernel/hw_breakpoint.c
+++ b/arch/arm/kernel/hw_breakpoint.c
@@ -1049,7 +1049,8 @@ static struct notifier_block dbg_cpu_pm_nb = {
static void __init pm_init(void)
{
- cpu_pm_register_notifier(&dbg_cpu_pm_nb);
+ if (has_ossr)
+ cpu_pm_register_notifier(&dbg_cpu_pm_nb);
}
#else
static inline void pm_init(void)