[S390] cio: remove casts from/to (void *).

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 7086a74..a2dee5b 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -177,7 +177,7 @@
 	struct device *dev;
 
 	dev = bus_find_device(&css_bus_type, NULL,
-			      (void *)&schid, check_subchannel);
+			      &schid, check_subchannel);
 
 	return dev ? to_subchannel(dev) : NULL;
 }