summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorArnd Bergmann <arnd@arndb.de>2013-03-26 01:50:45 +0400
committerArnd Bergmann <arnd@arndb.de>2013-03-26 01:50:45 +0400
commit57f0d12ccb58b0d9328be1dc0ea9e7b538b84439 (patch)
tree2ae49ffecf3b52c8048b9b47a93a11a796e1c9cf /arch
parent8bb9660418e05bb1845ac1a2428444d78e322cc7 (diff)
parent4080d2d11a2d572228c2b8d02406e997b87ba6a5 (diff)
downloadlinux-57f0d12ccb58b0d9328be1dc0ea9e7b538b84439.tar.xz
Merge tag 'msm-fix-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm into fixes
From David Brown <davidb@codeaurora.org>: This fix is intended for v3.9. It fixes a timer bug on MSM targets that cause system hangs. * tag 'msm-fix-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm: ARM: msm: Stop counting before reprogramming clockevent Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-msm/timer.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c
index 2969027f02fa..f9fd77e8f1f5 100644
--- a/arch/arm/mach-msm/timer.c
+++ b/arch/arm/mach-msm/timer.c
@@ -62,7 +62,10 @@ static int msm_timer_set_next_event(unsigned long cycles,
{
u32 ctrl = readl_relaxed(event_base + TIMER_ENABLE);
- writel_relaxed(0, event_base + TIMER_CLEAR);
+ ctrl &= ~TIMER_ENABLE_EN;
+ writel_relaxed(ctrl, event_base + TIMER_ENABLE);
+
+ writel_relaxed(ctrl, event_base + TIMER_CLEAR);
writel_relaxed(cycles, event_base + TIMER_MATCH_VAL);
writel_relaxed(ctrl | TIMER_ENABLE_EN, event_base + TIMER_ENABLE);
return 0;