genirq: Synchronize interrupt thread startup

[linux-2.6-microblaze.git] / kernel / irq / irqdesc.c

diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 939d21c..0099b87 100644 (file)
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -407,6 +407,7 @@ static struct irq_desc *alloc_desc(int irq, int node, unsigned int flags,
        lockdep_set_class(&desc->lock, &irq_desc_lock_class);
        mutex_init(&desc->request_mutex);
        init_rcu_head(&desc->rcu);
+       init_waitqueue_head(&desc->wait_for_threads);
 
        desc_set_defaults(irq, desc, node, affinity, owner);
        irqd_set(&desc->irq_data, flags);
@@ -575,6 +576,7 @@ int __init early_irq_init(void)
                raw_spin_lock_init(&desc[i].lock);
                lockdep_set_class(&desc[i].lock, &irq_desc_lock_class);
                mutex_init(&desc[i].request_mutex);
+               init_waitqueue_head(&desc[i].wait_for_threads);
                desc_set_defaults(i, &desc[i], node, NULL, NULL);
        }
        return arch_early_irq_init();