Merge branch 'for_paulus' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc

[linux-drm-fsl-dcu.git] / kernel / wait.c

diff --git a/kernel/wait.c b/kernel/wait.c
index 5985d866531f29b4165f81603cd30487acd111bd..444ddbfaefc490839e2cf913cb688c7ebb9f0df9 100644 (file)
--- a/kernel/wait.c
+++ b/kernel/wait.c
@@ -10,6 +10,14 @@
 #include <linux/wait.h>
 #include <linux/hash.h>
 
+void init_waitqueue_head(wait_queue_head_t *q)
+{
+       spin_lock_init(&q->lock);
+       INIT_LIST_HEAD(&q->task_list);
+}
+
+EXPORT_SYMBOL(init_waitqueue_head);
+
 void fastcall add_wait_queue(wait_queue_head_t *q, wait_queue_t *wait)
 {
        unsigned long flags;
@@ -53,7 +61,7 @@ EXPORT_SYMBOL(remove_wait_queue);
  * The spin_unlock() itself is semi-permeable and only protects
  * one way (it only protects stuff inside the critical region and
  * stops them from bleeding out - it would still allow subsequent
- * loads to move into the the critical region).
+ * loads to move into the critical region).
  */
 void fastcall
 prepare_to_wait(wait_queue_head_t *q, wait_queue_t *wait, int state)