diff options
Diffstat (limited to 'arch/arm/mach-sa1100/time.c')
| -rw-r--r-- | arch/arm/mach-sa1100/time.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/arch/arm/mach-sa1100/time.c b/arch/arm/mach-sa1100/time.c index 0eeb3616ffea..a084b38698cf 100644 --- a/arch/arm/mach-sa1100/time.c +++ b/arch/arm/mach-sa1100/time.c @@ -70,15 +70,6 @@ static unsigned long sa1100_gettimeoffset (void) return usec; } -/* - * We will be entered with IRQs enabled. - * - * Loop until we get ahead of the free running timer. - * This ensures an exact clock tick count and time accuracy. - * IRQs are disabled inside the loop to ensure coherence between - * lost_ticks (updated in do_timer()) and the match reg value, so we - * can use do_gettimeofday() from interrupt handlers. - */ static irqreturn_t sa1100_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) { @@ -86,6 +77,14 @@ sa1100_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) write_seqlock(&xtime_lock); + /* + * Loop until we get ahead of the free running timer. + * This ensures an exact clock tick count and time accuracy. + * Since IRQs are disabled at this point, coherence between + * lost_ticks(updated in do_timer()) and the match reg value is + * ensured, hence we can use do_gettimeofday() from interrupt + * handlers. + */ do { timer_tick(regs); OSSR = OSSR_M0; /* Clear match on timer 0 */ |