[PATCH 1/2] netxen: IMEZ multiport card 2nd port issue, dma watchdog fix

[dhananjay@netxen.com]

[-- Attachment #1: dma.patch --]
[-- Type: text/plain, Size: 4409 bytes --]

This fixes issue with 2nd port of multiport adapter that the MAC address
is reset by firmware in PCI probe. This patch also fixes a bug that PCI
resources are not released if dma watchdog shutdown failed. The dma watchdog
poll messages during module unload are also suppressed.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: Wen Xiong <wenxiong@us.ibm.com>

Index: netdev-2.6/drivers/net/netxen/netxen_nic_main.c
===================================================================
--- netdev-2.6.orig/drivers/net/netxen/netxen_nic_main.c
+++ netdev-2.6/drivers/net/netxen/netxen_nic_main.c
@@ -46,7 +46,7 @@ MODULE_DESCRIPTION("NetXen Multi port (1
 MODULE_LICENSE("GPL");
 MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
 
-char netxen_nic_driver_name[] = "netxen-nic";
+char netxen_nic_driver_name[] = "netxen_nic";
 static char netxen_nic_driver_string[] = "NetXen Network Driver version "
     NETXEN_NIC_LINUX_VERSIONID;
 
@@ -785,19 +785,18 @@ static void __devexit netxen_nic_remove(
 
 	if (adapter->portnum == 0) {
 		if (init_firmware_done) {
-			dma_watchdog_shutdown_request(adapter);
-			msleep(100);
 			i = 100;
-			while ((dma_watchdog_shutdown_poll_result(adapter) != 1) && i) {
-				printk(KERN_INFO "dma_watchdog_shutdown_poll still in progress\n");
+			do {
+				if (dma_watchdog_shutdown_request(adapter) == 1)
+					break;
 				msleep(100);
-				i--;
-			}
-
-			if (i == 0) {
-				printk(KERN_ERR "dma_watchdog_shutdown_request failed\n");
-				return;
-			}
+				if (dma_watchdog_shutdown_poll_result(adapter) == 1)
+					break;
+			} while (--i);
+
+			if (i == 0)
+				printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
+						netdev->name);
 
 			/* clear the register for future unloads/loads */
 			writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
@@ -805,12 +804,11 @@ static void __devexit netxen_nic_remove(
 				readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
 
 			/* leave the hw in the same state as reboot */
+			netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
 			writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
-			if (netxen_pinit_from_rom(adapter, 0))
-				return;
+			netxen_pinit_from_rom(adapter, 0);
 			msleep(1);
-			if (netxen_load_firmware(adapter))
-				return;
+			netxen_load_firmware(adapter);
 			netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
 		}
 
@@ -819,22 +817,21 @@ static void __devexit netxen_nic_remove(
 		printk(KERN_INFO "State: 0x%0x\n",
 			readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
 
-		dma_watchdog_shutdown_request(adapter);
-		msleep(100);
 		i = 100;
-		while ((dma_watchdog_shutdown_poll_result(adapter) != 1) && i) {
-			printk(KERN_INFO "dma_watchdog_shutdown_poll still in progress\n");
+		do {
+			if (dma_watchdog_shutdown_request(adapter) == 1)
+				break;
 			msleep(100);
-			i--;
-		}
+			if (dma_watchdog_shutdown_poll_result(adapter) == 1)
+				break;
+		} while (--i);
 
 		if (i) {
 			netxen_free_adapter_offload(adapter);
 		} else {
-			printk(KERN_ERR "failed to dma shutdown\n");
-			return;
+			printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
+					netdev->name);
 		}
-
 	}
 
 	iounmap(adapter->ahw.db_base);
@@ -898,8 +895,6 @@ static int netxen_nic_open(struct net_de
 
 	/* Done here again so that even if phantom sw overwrote it,
 	 * we set it */
-	if (adapter->macaddr_set)
-		adapter->macaddr_set(adapter, netdev->dev_addr);
 	if (adapter->init_port
 	    && adapter->init_port(adapter, adapter->portnum) != 0) {
 	    del_timer_sync(&adapter->watchdog_timer);
@@ -907,6 +902,8 @@ static int netxen_nic_open(struct net_de
 				netxen_nic_driver_name, adapter->portnum);
 		return -EIO;
 	}
+	if (adapter->macaddr_set)
+		adapter->macaddr_set(adapter, netdev->dev_addr);
 
 	netxen_nic_set_link_parameters(adapter);
 
Index: netdev-2.6/drivers/net/netxen/netxen_nic.h
===================================================================
--- netdev-2.6.orig/drivers/net/netxen/netxen_nic.h
+++ netdev-2.6/drivers/net/netxen/netxen_nic.h
@@ -1179,8 +1179,7 @@ dma_watchdog_shutdown_poll_result(struct
 	    NETXEN_CAM_RAM(NETXEN_CAM_RAM_DMA_WATCHDOG_CTRL), &ctrl, 4))
 		printk(KERN_ERR "failed to read dma watchdog status\n");
 
-	return ((netxen_get_dma_watchdog_enabled(ctrl) == 0) &&
-		(netxen_get_dma_watchdog_disabled(ctrl) == 0));
+	return (netxen_get_dma_watchdog_enabled(ctrl) == 0);
 }
 
 static inline int

--