From 7c5b3fc20807279d8f8e78f1e2ef275128668796 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 28 Oct 2005 14:52:30 +0100 Subject: [ARM] 2/4 Fix oprofile suspend/resume The oprofile suspend/resume was missing locking. If we failed to start oprofile on resume, we still reported that it was enabled. Instead, disable oprofile on error. Signed-off-by: Russell King --- arch/arm/oprofile/common.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/arm/oprofile/common.c b/arch/arm/oprofile/common.c index 5b1d752..02e5d6f 100644 --- a/arch/arm/oprofile/common.c +++ b/arch/arm/oprofile/common.c @@ -78,15 +78,19 @@ static void pmu_stop(void) #ifdef CONFIG_PM static int pmu_suspend(struct sys_device *dev, pm_message_t state) { + down(&pmu_sem); if (pmu_enabled) - pmu_stop(); + pmu_model->stop(); + up(&pmu_sem); return 0; } static int pmu_resume(struct sys_device *dev) { - if (pmu_enabled) - pmu_start(); + down(&pmu_sem); + if (pmu_enabled && pmu_model->start()) + pmu_enabled = 0; + up(&pmu_sem); return 0; } -- cgit v1.1