[ARM] Always claim the timer IRQ using SA_INTERRUPT.

arch/arm/kernel/time.c

@@ -200,6 +200,7 @@ void do_settimeofday(struct timeval *tv)
 
 static struct irqaction timer_irq = {
 	.name	= "timer",
+	.flags	= SA_INTERRUPT,
 };
 
 /*

include/asm-arm/arch-anakin/time.h

@@ -23,7 +23,6 @@ anakin_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 void __init time_init(void)
 {
 	timer_irq.handler = anakin_timer_interrupt;
-	timer_irq.flags = SA_INTERRUPT;
 	setup_irq(IRQ_TICK, &timer_irq);
 }
 

include/asm-arm/arch-sa1100/time.h

@@ -75,15 +75,12 @@ static unsigned long sa1100_gettimeoffset (void)
 static void sa1100_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 {
 	unsigned int next_match;
-	unsigned long flags;
 
 	do {
 		do_leds();
-		local_irq_save(flags);
 		do_timer(regs);
 		OSSR = OSSR_M0;  /* Clear match on timer 0 */
 		next_match = (OSMR0 += LATCH);
-		local_irq_restore(flags);
 		do_set_rtc();
 	} while ((signed long)(next_match - OSCR) <= 0);
 

include/asm-arm/arch-shark/time.h

@@ -34,6 +34,5 @@ void __init time_init(void)
 	xtime.tv_sec = 0;
 
 	timer_irq.handler = timer_interrupt;
-	timer_irq.flags = SA_INTERRUPT; /* FIXME: really? */
 	setup_irq(IRQ_TIMER, &timer_irq);
 }