WorkStruct: make allyesconfig

Fix up for make allyesconfig.

Signed-Off-By: David Howells <dhowells@redhat.com>
diff --git a/drivers/md/kcopyd.c b/drivers/md/kcopyd.c
index f1db6ef..b3c0149 100644
--- a/drivers/md/kcopyd.c
+++ b/drivers/md/kcopyd.c
@@ -417,7 +417,7 @@
 /*
  * kcopyd does this every time it's woken up.
  */
-static void do_work(void *ignored)
+static void do_work(struct work_struct *ignored)
 {
 	/*
 	 * The order that these are called is *very* important.
@@ -628,7 +628,7 @@
 	}
 
 	kcopyd_clients++;
-	INIT_WORK(&_kcopyd_work, do_work, NULL);
+	INIT_WORK(&_kcopyd_work, do_work);
 	mutex_unlock(&kcopyd_init_lock);
 	return 0;
 }