diff options
| -rw-r--r-- | arch/arm/mach-ns9xxx/irq.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mach-ns9xxx/irq.c b/arch/arm/mach-ns9xxx/irq.c index cd8f8365b62..b8c7b00522e 100644 --- a/arch/arm/mach-ns9xxx/irq.c +++ b/arch/arm/mach-ns9xxx/irq.c @@ -21,6 +21,15 @@ static void ns9xxx_ack_irq_timer(unsigned int irq) { u32 tc = SYS_TC(irq - IRQ_TIMER0); + /* + * If the timer is programmed to halt on terminal count, the + * timer must be disabled before clearing the interrupt. + */ + if (REGGET(tc, SYS_TCx, REN) == 0) { + REGSET(tc, SYS_TCx, TEN, DIS); + SYS_TC(irq - IRQ_TIMER0) = tc; + } + REGSET(tc, SYS_TCx, INTC, SET); SYS_TC(irq - IRQ_TIMER0) = tc; |