drbd: drbd_send_state_req(): Return 0 upon success and an error code otherwise

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

drivers/block/drbd/drbd_int.h

@@ -1955,7 +1955,7 @@ static inline int drbd_send_ping_ack(struct drbd_tconn *tconn)
 static inline int drbd_send_state_req(struct drbd_conf *mdev,
 				      union drbd_state mask, union drbd_state val)
 {
-	return !_conn_send_state_req(mdev->tconn, mdev->vnr, P_STATE_CHG_REQ, mask, val);
+	return _conn_send_state_req(mdev->tconn, mdev->vnr, P_STATE_CHG_REQ, mask, val);
 }
 
 static inline int conn_send_state_req(struct drbd_tconn *tconn,

drivers/block/drbd/drbd_state.c

@@ -197,7 +197,7 @@ drbd_req_state(struct drbd_conf *mdev, union drbd_state mask,
 			goto abort;
 		}
 
-		if (!drbd_send_state_req(mdev, mask, val)) {
+		if (drbd_send_state_req(mdev, mask, val)) {
 			rv = SS_CW_FAILED_BY_PEER;
 			if (f & CS_VERBOSE)
 				print_st_err(mdev, os, ns, rv);