diff options
| author | Stephen Boyd <sboyd@codeaurora.org> | 2011-11-08 10:34:09 -0800 |
|---|---|---|
| committer | David Brown <davidb@codeaurora.org> | 2011-11-10 10:36:33 -0800 |
| commit | dde7d61e7f9bf0e844df375412ec5d51650db486 (patch) | |
| tree | eebad0b8c5cd9a47a6d230907cbdd1444d164396 | |
| parent | 2081a6b57fba2717fa4b04fe978abad238e1f9e4 (diff) | |
| download | blackbird-op-linux-dde7d61e7f9bf0e844df375412ec5d51650db486.tar.gz blackbird-op-linux-dde7d61e7f9bf0e844df375412ec5d51650db486.zip | |
msm: timer: Setup interrupt after registering clockevent
Some bootloaders may leave a pending interrupt for the timer and
thus msm_timer_interrupt() has a check for a NULL event handler.
Unmask and register for the interrupt after registering the
clockevent so that we can get the NULL pointer check out of the
fast path.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: David Brown <davidb@codeaurora.org>
| -rw-r--r-- | arch/arm/mach-msm/timer.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c index ca0a957d8626..3d80fbf34165 100644 --- a/arch/arm/mach-msm/timer.c +++ b/arch/arm/mach-msm/timer.c @@ -47,8 +47,6 @@ static void __iomem *event_base; static irqreturn_t msm_timer_interrupt(int irq, void *dev_id) { struct clock_event_device *evt = *(struct clock_event_device **)dev_id; - if (evt->event_handler == NULL) - return IRQ_HANDLED; /* Stop the timer tick */ if (evt->mode == CLOCK_EVT_MODE_ONESHOT) { u32 ctrl = readl_relaxed(event_base + TIMER_ENABLE); @@ -174,6 +172,7 @@ static void __init msm_timer_init(void) ce->cpumask = cpumask_of(0); ce->irq = INT_GP_TIMER_EXP; + clockevents_register_device(ce); if (cpu_is_msm8x60() || cpu_is_msm8960()) { msm_evt.percpu_evt = alloc_percpu(struct clock_event_device *); if (!msm_evt.percpu_evt) { @@ -194,7 +193,6 @@ static void __init msm_timer_init(void) if (res) pr_err("request_irq failed for %s\n", ce->name); - clockevents_register_device(ce); err: writel_relaxed(TIMER_ENABLE_EN, source_base + TIMER_ENABLE); res = clocksource_register_hz(cs, dgt_hz); @@ -224,8 +222,8 @@ int __cpuinit local_timer_setup(struct clock_event_device *evt) evt->min_delta_ns = clockevent_delta2ns(4, evt); *__this_cpu_ptr(msm_evt.percpu_evt) = evt; - enable_percpu_irq(evt->irq, 0); clockevents_register_device(evt); + enable_percpu_irq(evt->irq, 0); return 0; } |
