From: Chad Dupuis <cdupuis@redhat.com>
Date: Tue, 3 Aug 2010 13:52:39 -0400
Subject: [net] netxen: fix for kdump
Message-id: <20100803134955.2239.27839.sendpatchset@localhost.localdomain>
Patchwork-id: 27346
O-Subject: [RHEL 5.6 PATCH 44/44] netxen: fix for kdump
Bugzilla: 562937
RH-Acked-by: David S. Miller <davem@redhat.com>
RH-Acked-by: Neil Horman <nhorman@redhat.com>

Bugzilla
========

562937

Upstream Status
===============

net-2.6 commit id f8320f059296eb8cab6e2429c7ec79b43d42cf42

Description
===========

>From cc91134343a491e7620153b6834753754e6c1b30 Mon Sep 17 00:00:00 2001
From: Rajesh Borundia <rajesh.borundia@qlogic.com>
Date: Wed, 14 Jul 2010 17:55:35 -0700
Subject: [PATCH] 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>

diff --git a/drivers/net/netxen/netxen_nic_ctx.c b/drivers/net/netxen/netxen_nic_ctx.c
index 3a41b6a..1261212 100644
--- a/drivers/net/netxen/netxen_nic_ctx.c
+++ b/drivers/net/netxen/netxen_nic_ctx.c
@@ -255,6 +255,19 @@ out_free_rq:
 }
 
 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)
 {
 	struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
@@ -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;