netxen: fix for kdump

When the crash kernel is loaded after crash, the device is in unknown state.
So reset the device contexts prior to its creation in case of kdump,
depending upon kernel parameter reset_devices.

Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/netxen/netxen_nic_ctx.c

@@ -254,6 +254,19 @@ nx_fw_cmd_create_rx_ctx(struct netxen_adapter *adapter)
 	return err;
 }
 
+static void
+nx_fw_cmd_reset_ctx(struct netxen_adapter *adapter)
+{
+
+	netxen_issue_cmd(adapter, adapter->ahw.pci_func, NXHAL_VERSION,
+			adapter->ahw.pci_func, NX_DESTROY_CTX_RESET, 0,
+			NX_CDRP_CMD_DESTROY_RX_CTX);
+
+	netxen_issue_cmd(adapter, adapter->ahw.pci_func, NXHAL_VERSION,
+			adapter->ahw.pci_func, NX_DESTROY_CTX_RESET, 0,
+			NX_CDRP_CMD_DESTROY_TX_CTX);
+}
+
 static void
 nx_fw_cmd_destroy_rx_ctx(struct netxen_adapter *adapter)
 {
@@ -685,7 +698,8 @@ int netxen_alloc_hw_resources(struct netxen_adapter *adapter)
 	if (!NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
 		if (test_and_set_bit(__NX_FW_ATTACHED, &adapter->state))
 			goto done;
-
+		if (reset_devices)
+			nx_fw_cmd_reset_ctx(adapter);
 		err = nx_fw_cmd_create_rx_ctx(adapter);
 		if (err)
 			goto err_out_free;