Commit 57f0d12c authored Mar 25, 2013 by Arnd Bergmann

Merge tag 'msm-fix-3.9' of...

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>

parents 8bb96604 4080d2d1

arch/arm/mach-msm/timer.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -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;