qlcnic: release device resources during interface down

Previously we were allocating device resources during probe and
release them during remove.
Now alloc during interface up and release in interface down.
This helps in device performance, as it doesn't need to keep
track of inactive resources.

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/qlcnic/qlcnic_ethtool.c b/drivers/net/qlcnic/qlcnic_ethtool.c
index a4f1120..d4e803e 100644
--- a/drivers/net/qlcnic/qlcnic_ethtool.c
+++ b/drivers/net/qlcnic/qlcnic_ethtool.c
@@ -348,7 +348,7 @@
 	for (i = 0; diag_registers[i] != -1; i++)
 		regs_buff[i] = QLCRD32(adapter, diag_registers[i]);
 
-	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+	if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
 		return;
 
 	regs_buff[i++] = 0xFFEFCDAB; /* Marker btw regs and ring count*/
@@ -833,6 +833,9 @@
 	struct qlcnic_adapter *adapter = netdev_priv(dev);
 	int ret;
 
+	if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
+		return -EIO;
+
 	ret = adapter->nic_ops->config_led(adapter, 1, 0xf);
 	if (ret) {
 		dev_err(&adapter->pdev->dev,
@@ -904,7 +907,7 @@
 {
 	struct qlcnic_adapter *adapter = netdev_priv(netdev);
 
-	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
+	if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
 		return -EINVAL;
 
 	/*