genirq: Do not consider disabled wakeup irqs (9c6079aa) · Commits · 戴 / test

If an wakeup interrupt has been disabled before the suspend code disables all interrupts then we have to ignore the pending flag. Otherwise we would abort suspend over and over as nothing clears the pending flag because the interrupt is disabled. Signed-off-by:

Thomas Gleixner <tglx@linutronix.de> Cc: NeilBrown <neilb@suse.de>

kernel/irq/pm.c

+6 −1

Original line number	Original line	Diff line number	Diff line
	@@ -103,8 +103,13 @@ int check_wakeup_irqs(void)
	int irq;		int irq;

	for_each_irq_desc(irq, desc) {		for_each_irq_desc(irq, desc) {
			/*
			* Only interrupts which are marked as wakeup source
			* and have not been disabled before the suspend check
			* can abort suspend.
			*/
	if (irqd_is_wakeup_set(&desc->irq_data)) {		if (irqd_is_wakeup_set(&desc->irq_data)) {
	if (desc->istate & IRQS_PENDING)		if (desc->depth == 1 && desc->istate & IRQS_PENDING)
	return -EBUSY;		return -EBUSY;
	continue;		continue;
	}		}

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