genirq: Do not consider disabled wakeup irqs

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>

1 files changed, 6 insertions, 1 deletions

diff --git a/kernel/irq/pm.c b/kernel/irq/pm.c
index 15e53b1766a6..cb228bf21760 100644
--- a/kernel/irq/pm.c
+++ b/kernel/irq/pm.c
@@ -103,8 +103,13 @@ int check_wakeup_irqs(void)
         int irq;
 
         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 (desc->istate & IRQS_PENDING)
+                        if (desc->depth == 1 && desc->istate & IRQS_PENDING)
                                 return -EBUSY;
                         continue;
                 }