s390/qeth: fix initial operstate

Setting the carrier 'on' for an unregistered netdevice doesn't update
its operstate. Fix this by delaying the update until the netdevice has
been registered.

Fixes: 91cc98f5 ("s390/qeth: remove duplicated carrier state tracking")
Signed-off-by: NJulian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/s390/net/qeth_core.h

@@ -991,7 +991,7 @@ int qeth_wait_for_threads(struct qeth_card *, unsigned long);
 int qeth_do_run_thread(struct qeth_card *, unsigned long);
 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
-int qeth_core_hardsetup_card(struct qeth_card *);
+int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok);
 void qeth_print_status_message(struct qeth_card *);
 int qeth_init_qdio_queues(struct qeth_card *);
 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,

drivers/s390/net/qeth_core_main.c

@@ -5075,7 +5075,7 @@ static struct ccw_driver qeth_ccw_driver = {
 	.remove = ccwgroup_remove_ccwdev,
 };
 
-int qeth_core_hardsetup_card(struct qeth_card *card)
+int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
 {
 	int retries = 3;
 	int rc;
@@ -5150,13 +5150,20 @@ int qeth_core_hardsetup_card(struct qeth_card *card)
 		if (rc == IPA_RC_LAN_OFFLINE) {
 			dev_warn(&card->gdev->dev,
 				"The LAN is offline\n");
-			netif_carrier_off(card->dev);
+			*carrier_ok = false;
 		} else {
 			rc = -ENODEV;
 			goto out;
 		}
 	} else {
-		netif_carrier_on(card->dev);
+		*carrier_ok = true;
+	}
+
+	if (qeth_netdev_is_registered(card->dev)) {
+		if (*carrier_ok)
+			netif_carrier_on(card->dev);
+		else
+			netif_carrier_off(card->dev);
 	}
 
 	card->options.ipa4.supported_funcs = 0;

drivers/s390/net/qeth_l2_main.c

@@ -863,7 +863,7 @@ static const struct net_device_ops qeth_l2_netdev_ops = {
 	.ndo_set_features	= qeth_set_features
 };
 
-static int qeth_l2_setup_netdev(struct qeth_card *card)
+static int qeth_l2_setup_netdev(struct qeth_card *card, bool carrier_ok)
 {
 	int rc;
 
@@ -920,6 +920,9 @@ static int qeth_l2_setup_netdev(struct qeth_card *card)
 	qeth_l2_request_initial_mac(card);
 	netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
 	rc = register_netdev(card->dev);
+	if (!rc && carrier_ok)
+		netif_carrier_on(card->dev);
+
 	if (rc)
 		card->dev->netdev_ops = NULL;
 	return rc;
@@ -950,6 +953,7 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 	int rc = 0;
 	enum qeth_card_states recover_flag;
+	bool carrier_ok;
 
 	mutex_lock(&card->discipline_mutex);
 	mutex_lock(&card->conf_mutex);
@@ -957,7 +961,7 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 
 	recover_flag = card->state;
-	rc = qeth_core_hardsetup_card(card);
+	rc = qeth_core_hardsetup_card(card, &carrier_ok);
 	if (rc) {
 		QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
 		rc = -ENODEV;
@@ -968,7 +972,7 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 		dev_info(&card->gdev->dev,
 		"The device represents a Bridge Capable Port\n");
 
-	rc = qeth_l2_setup_netdev(card);
+	rc = qeth_l2_setup_netdev(card, carrier_ok);
 	if (rc)
 		goto out_remove;
 

drivers/s390/net/qeth_l3_main.c

@@ -2351,7 +2351,7 @@ static const struct net_device_ops qeth_l3_osa_netdev_ops = {
 	.ndo_neigh_setup	= qeth_l3_neigh_setup,
 };
 
-static int qeth_l3_setup_netdev(struct qeth_card *card)
+static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
 {
 	unsigned int headroom;
 	int rc;
@@ -2425,6 +2425,9 @@ static int qeth_l3_setup_netdev(struct qeth_card *card)
 
 	netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
 	rc = register_netdev(card->dev);
+	if (!rc && carrier_ok)
+		netif_carrier_on(card->dev);
+
 out:
 	if (rc)
 		card->dev->netdev_ops = NULL;
@@ -2476,6 +2479,7 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 	int rc = 0;
 	enum qeth_card_states recover_flag;
+	bool carrier_ok;
 
 	mutex_lock(&card->discipline_mutex);
 	mutex_lock(&card->conf_mutex);
@@ -2483,14 +2487,14 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 
 	recover_flag = card->state;
-	rc = qeth_core_hardsetup_card(card);
+	rc = qeth_core_hardsetup_card(card, &carrier_ok);
 	if (rc) {
 		QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
 		rc = -ENODEV;
 		goto out_remove;
 	}
 
-	rc = qeth_l3_setup_netdev(card);
+	rc = qeth_l3_setup_netdev(card, carrier_ok);
 	if (rc)
 		goto out_remove;