WorkStruct: make allyesconfig

Fix up for make allyesconfig.

Signed-Off-By: David Howells <dhowells@redhat.com>
diff --git a/drivers/message/i2o/driver.c b/drivers/message/i2o/driver.c
index 6413022..7fc7399 100644
--- a/drivers/message/i2o/driver.c
+++ b/drivers/message/i2o/driver.c
@@ -232,7 +232,7 @@
 			break;
 		}
 
-		INIT_WORK(&evt->work, (void (*)(void *))drv->event, evt);
+		INIT_WORK(&evt->work, drv->event);
 		queue_work(drv->event_queue, &evt->work);
 		return 1;
 	}