1 files changed, 20 insertions, 0 deletions

diff --git a/kernel/irq/pm.c b/kernel/irq/pm.c
index d6961d3c6f9e..8f557fa1f4fe 100644
--- a/kernel/irq/pm.c
+++ b/kernel/irq/pm.c
@@ -177,6 +177,26 @@ static void resume_irqs(bool want_early)
 }
 
 /**
+ * rearm_wake_irq - rearm a wakeup interrupt line after signaling wakeup
+ * @irq: Interrupt to rearm
+ */
+void rearm_wake_irq(unsigned int irq)
+{
+        unsigned long flags;
+        struct irq_desc *desc = irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL);
+
+        if (!desc || !(desc->istate & IRQS_SUSPENDED) ||
+            !irqd_is_wakeup_set(&desc->irq_data))
+                return;
+
+        desc->istate &= ~IRQS_SUSPENDED;
+        irqd_set(&desc->irq_data, IRQD_WAKEUP_ARMED);
+        __enable_irq(desc);
+
+        irq_put_desc_busunlock(desc, flags);
+}
+
+/**
  * irq_pm_syscore_ops - enable interrupt lines early
  *
  * Enable all interrupt lines with %IRQF_EARLY_RESUME set.