diff options
Diffstat (limited to 'arch/arm/mach-at91/at91sam926x_time.c')
| -rw-r--r-- | arch/arm/mach-at91/at91sam926x_time.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/arm/mach-at91/at91sam926x_time.c b/arch/arm/mach-at91/at91sam926x_time.c index 4bd56aee437..608a63240b6 100644 --- a/arch/arm/mach-at91/at91sam926x_time.c +++ b/arch/arm/mach-at91/at91sam926x_time.c @@ -62,16 +62,12 @@ static struct clocksource pit_clk = { static void pit_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev) { - unsigned long flags; - switch (mode) { case CLOCK_EVT_MODE_PERIODIC: - /* update clocksource counter, then enable the IRQ */ - raw_local_irq_save(flags); + /* update clocksource counter */ pit_cnt += pit_cycle * PIT_PICNT(at91_sys_read(AT91_PIT_PIVR)); at91_sys_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN | AT91_PIT_PITIEN); - raw_local_irq_restore(flags); break; case CLOCK_EVT_MODE_ONESHOT: BUG(); @@ -100,6 +96,11 @@ static struct clock_event_device pit_clkevt = { */ static irqreturn_t at91sam926x_pit_interrupt(int irq, void *dev_id) { + /* + * irqs should be disabled here, but as the irq is shared they are only + * guaranteed to be off if the timer irq is registered first. + */ + WARN_ON_ONCE(!irqs_disabled()); /* The PIT interrupt may be disabled, and is shared */ if ((pit_clkevt.mode == CLOCK_EVT_MODE_PERIODIC) |