qlcnic: Fix register device in FAILED state for 82xx.

o Commit 7e2cf4feba058476324dc545e3d1b316998c91e6
  ("qlcnic: change driver hardware interface mechanism")
  has overwritten
  commit b43e5ee76a4320c070cf0fe65cf4927198fbb4d1
  ("qlcnic: Register device in FAILED state")

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index c4c5023..21d00a0 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -431,6 +431,9 @@
 	while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
 		usleep_range(10000, 11000);
 
+	if (!adapter->fw_work.work.func)
+		return;
+
 	cancel_delayed_work_sync(&adapter->fw_work);
 }
 
@@ -2275,8 +2278,9 @@
 		adapter->portnum = adapter->ahw->pci_func;
 		err = qlcnic_start_firmware(adapter);
 		if (err) {
-			dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n");
-			goto err_out_free_hw;
+			dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n"
+				"\t\tIf reboot doesn't help, try flashing the card\n");
+			goto err_out_maintenance_mode;
 		}
 
 		qlcnic_get_multiq_capability(adapter);
@@ -2408,6 +2412,22 @@
 	pci_set_drvdata(pdev, NULL);
 	pci_disable_device(pdev);
 	return err;
+
+err_out_maintenance_mode:
+	netdev->netdev_ops = &qlcnic_netdev_failed_ops;
+	SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_failed_ops);
+	err = register_netdev(netdev);
+
+	if (err) {
+		dev_err(&pdev->dev, "Failed to register net device\n");
+		qlcnic_clr_all_drv_state(adapter, 0);
+		goto err_out_free_hw;
+	}
+
+	pci_set_drvdata(pdev, adapter);
+	qlcnic_add_sysfs(adapter);
+
+	return 0;
 }
 
 static void qlcnic_remove(struct pci_dev *pdev)
@@ -2518,8 +2538,16 @@
 static int qlcnic_open(struct net_device *netdev)
 {
 	struct qlcnic_adapter *adapter = netdev_priv(netdev);
+	u32 state;
 	int err;
 
+	state = QLC_SHARED_REG_RD32(adapter, QLCNIC_CRB_DEV_STATE);
+	if (state == QLCNIC_DEV_FAILED || state == QLCNIC_DEV_BADBAD) {
+		netdev_err(netdev, "%s: Device is in FAILED state\n", __func__);
+
+		return -EIO;
+	}
+
 	netif_carrier_off(netdev);
 
 	err = qlcnic_attach(adapter);
@@ -3228,6 +3256,13 @@
 		return;
 
 	state = QLC_SHARED_REG_RD32(adapter, QLCNIC_CRB_DEV_STATE);
+	if (state == QLCNIC_DEV_FAILED || state == QLCNIC_DEV_BADBAD) {
+		netdev_err(adapter->netdev, "%s: Device is in FAILED state\n",
+			   __func__);
+		qlcnic_api_unlock(adapter);
+
+		return;
+	}
 
 	if (state == QLCNIC_DEV_READY) {
 		QLC_SHARED_REG_WR32(adapter, QLCNIC_CRB_DEV_STATE,