block: make blk_init_free_list and elevator_init idempotent

[mv-sheeva.git] / block / elevator.c

diff --git a/block/elevator.c b/block/elevator.c
index 0abce473d60699ca74a96a8d67c8cc74154f272c..923a9139106c51cbdb63dca5d1c97ce81a30d316 100644 (file)
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -242,9 +242,11 @@ int elevator_init(struct request_queue *q, char *name)
 {
        struct elevator_type *e = NULL;
        struct elevator_queue *eq;
-       int ret = 0;
        void *data;
 
+       if (unlikely(q->elevator))
+               return 0;
+
        INIT_LIST_HEAD(&q->queue_head);
        q->last_merge = NULL;
        q->end_sector = 0;
@@ -284,7 +286,7 @@ int elevator_init(struct request_queue *q, char *name)
        }
 
        elevator_attach(q, eq, data);
-       return ret;
+       return 0;
 }
 EXPORT_SYMBOL(elevator_init);