Merge branch 'merge' into next

Merge "merge" branch to get two fairly important bug fixes:

powerpc/powernv: Reset root port in firmware
powerpc: irq work racing with timer interrupt can result in timer interrupt

arch/powerpc/kernel/time.c

@@ -813,9 +813,6 @@ static void __init clocksource_init(void)
 static int decrementer_set_next_event(unsigned long evt,
 				      struct clock_event_device *dev)
 {
-	/* Don't adjust the decrementer if some irq work is pending */
-	if (test_irq_work_pending())
-		return 0;
 	__get_cpu_var(decrementers_next_tb) = get_tb_or_rtc() + evt;
 	set_dec(evt);