[PATCH] alpha smp fix (part #2)

This fixes the bug that caused BUG_ON(!irqs_disabled()) to trigger in
run_posix_cpu_timers() on alpha/smp.  We didn't disable interrupts
properly before calling smp_percpu_timer_interrupt().

We *do* disable interrupts everywhere except this unfortunate
smp_percpu_timer_interrupt().  Fixed thus.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

arch/alpha/kernel/irq_alpha.c

@@ -55,6 +55,8 @@ do_entInt(unsigned long type, unsigned long vector,
 #ifdef CONFIG_SMP
 	  {
 		long cpu;
+
+		local_irq_disable();
 		smp_percpu_timer_interrupt(regs);
 		cpu = smp_processor_id();
 		if (cpu != boot_cpuid) {