nfp: flower: obtain repr link state only from firmware

Instead of starting up reprs assuming that there is link, only respond
to the link state reported by firmware.

Furthermore, ensure link is down after repr netdevs are created.

Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/netronome/nfp/flower/main.c

@@ -110,7 +110,6 @@ nfp_flower_repr_netdev_open(struct nfp_app *app, struct nfp_repr *repr)
 	if (err)
 		return err;
 
-	netif_carrier_on(repr->netdev);
 	netif_tx_wake_all_queues(repr->netdev);
 
 	return 0;
@@ -119,7 +118,6 @@ nfp_flower_repr_netdev_open(struct nfp_app *app, struct nfp_repr *repr)
 static int
 nfp_flower_repr_netdev_stop(struct nfp_app *app, struct nfp_repr *repr)
 {
-	netif_carrier_off(repr->netdev);
 	netif_tx_disable(repr->netdev);
 
 	return nfp_flower_cmsg_portmod(repr, false);

drivers/net/ethernet/netronome/nfp/nfp_net_repr.c

@@ -336,6 +336,8 @@ struct net_device *nfp_repr_alloc(struct nfp_app *app)
 	if (!netdev)
 		return NULL;
 
+	netif_carrier_off(netdev);
+
 	repr = netdev_priv(netdev);
 	repr->netdev = netdev;
 	repr->app = app;