drbd: conn_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

@@ -1962,7 +1962,7 @@ static inline int conn_send_state_req(struct drbd_tconn *tconn,
 				      union drbd_state mask, union drbd_state val)
 {
 	enum drbd_packet cmd = tconn->agreed_pro_version < 100 ? P_STATE_CHG_REQ : P_CONN_ST_CHG_REQ;
-	return !_conn_send_state_req(tconn, 0, cmd, mask, val);
+	return _conn_send_state_req(tconn, 0, cmd, mask, val);
 }
 
 static inline void drbd_thread_stop(struct drbd_thread *thi)

drivers/block/drbd/drbd_state.c

@@ -1438,7 +1438,7 @@ conn_cl_wide(struct drbd_tconn *tconn, union drbd_state mask, union drbd_state v
 	spin_unlock_irq(&tconn->req_lock);
 	mutex_lock(&tconn->cstate_mutex);
 
-	if (!conn_send_state_req(tconn, mask, val)) {
+	if (conn_send_state_req(tconn, mask, val)) {
 		rv = SS_CW_FAILED_BY_PEER;
 		/* if (f & CS_VERBOSE)
 		   print_st_err(mdev, os, ns, rv); */