1 files changed, 27 insertions, 0 deletions

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 274ba9238fb7..54eb5c99351b 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -911,6 +911,33 @@ static int irq_thread(void *data)
         return 0;
 }
 
+/**
+ *      irq_wake_thread - wake the irq thread for the action identified by dev_id
+ *      @irq:           Interrupt line
+ *      @dev_id:        Device identity for which the thread should be woken
+ *
+ */
+void irq_wake_thread(unsigned int irq, void *dev_id)
+{
+        struct irq_desc *desc = irq_to_desc(irq);
+        struct irqaction *action;
+        unsigned long flags;
+
+        if (!desc || WARN_ON(irq_settings_is_per_cpu_devid(desc)))
+                return;
+
+        raw_spin_lock_irqsave(&desc->lock, flags);
+        for (action = desc->action; action; action = action->next) {
+                if (action->dev_id == dev_id) {
+                        if (action->thread)
+                                __irq_wake_thread(desc, action);
+                        break;
+                }
+        }
+        raw_spin_unlock_irqrestore(&desc->lock, flags);
+}
+EXPORT_SYMBOL_GPL(irq_wake_thread);
+
 static void irq_setup_forced_threading(struct irqaction *new)
 {
         if (!force_irqthreads)