[PATCH] netxen: drop redudant spinlock

[PATCH] netxen: drop redudant spinlock

[Dhananjay Phadke]

Some leftover code that makes use of adapter->lock in tx_timeout function,
which resets the interface under this lock. In close() when the workqueue
is flushed, prints the warning about sleeping with interrupts disabled
(when spinlock debug is enabled). The lock was required with private netxen
IOCTLs, which were removed a while ago.

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
@@ -335,7 +335,6 @@ netxen_nic_probe(struct pci_dev *pdev, c
 	adapter->ahw.pdev = pdev;
 	adapter->ahw.pci_func  = pci_func_id;
 	spin_lock_init(&adapter->tx_lock);
-	spin_lock_init(&adapter->lock);
 
 	/* remap phys address */
 	mem_base = pci_resource_start(pdev, 0);	/* 0 is for BAR 0 */
@@ -1228,15 +1227,12 @@ static void netxen_tx_timeout_task(struc
 {
 	struct netxen_adapter *adapter = 
 		container_of(work, struct netxen_adapter, tx_timeout_task);
-	unsigned long flags;
 
 	printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
 	       netxen_nic_driver_name, adapter->netdev->name);
 
-	spin_lock_irqsave(&adapter->lock, flags);
 	netxen_nic_close(adapter->netdev);
 	netxen_nic_open(adapter->netdev);
-	spin_unlock_irqrestore(&adapter->lock, flags);
 	adapter->netdev->trans_start = jiffies;
 	netif_wake_queue(adapter->netdev);
 }

Re: [PATCH] netxen: drop redudant spinlock

[Jeff Garzik]

Dhananjay Phadke wrote:
> Some leftover code that makes use of adapter->lock in tx_timeout function,
> which resets the interface under this lock. In close() when the workqueue
> is flushed, prints the warning about sleeping with interrupts disabled
> (when spinlock debug is enabled). The lock was required with private netxen
> IOCTLs, which were removed a while ago.

applied