[JFFS2] Fix cleanup in case of GC-Task not started

Do not call wait_for_completion, when the gc task is not there. 
Prevent an oops when the gc thread was not started.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 5 insertions, 2 deletions

diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 5548749bacb6..65119d72cce0 100644
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: background.c,v 1.52 2005/05/19 16:18:08 gleixner Exp $
+ * $Id: background.c,v 1.54 2005/05/20 21:37:12 gleixner Exp $
  *
  */
 
@@ -56,13 +56,16 @@ int jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c)
 
 void jffs2_stop_garbage_collect_thread(struct jffs2_sb_info *c)
 {
+        int wait = 0;
         spin_lock(&c->erase_completion_lock);
         if (c->gc_task) {
                 D1(printk(KERN_DEBUG "jffs2: Killing GC task %d\n", c->gc_task->pid));
                 send_sig(SIGKILL, c->gc_task, 1);
+                wait = 1;
         }
         spin_unlock(&c->erase_completion_lock);
-        wait_for_completion(&c->gc_thread_exit);
+        if (wait)
+                wait_for_completion(&c->gc_thread_exit);
 }
 
 static int jffs2_garbage_collect_thread(void *_c)