Merge branch 'pm-genirq'

* pm-genirq:
  PM / genirq: Document rules related to system suspend and interrupts
  PCI / PM: Make PCIe PME interrupts wake up from suspend-to-idle
  x86 / PM: Set IRQCHIP_SKIP_SET_WAKE for IOAPIC IRQ chip objects
  genirq: Simplify wakeup mechanism
  genirq: Mark wakeup sources as armed on suspend
  genirq: Create helper for flow handler entry check
  genirq: Distangle edge handler entry
  genirq: Avoid double loop on suspend
  genirq: Move MASK_ON_SUSPEND handling into suspend_device_irqs()
  genirq: Make use of pm misfeature accounting
  genirq: Add sanity checks for PM options on shared interrupt lines
  genirq: Move suspend/resume logic into irq/pm code
  PM / sleep: Mechanism for aborting system suspends unconditionally

kernel/power/process.c

@@ -129,6 +129,7 @@ int freeze_processes(void)
 	if (!pm_freezing)
 		atomic_inc(&system_freezing_cnt);
 
+	pm_wakeup_clear();
 	printk("Freezing user space processes ... ");
 	pm_freezing = true;
 	error = try_to_freeze_tasks(true);