Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/…

…davem/net-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [IRDA]: fix printk format [NETPOLL] netconsole: fix soft lockup when removing module [NETPOLL]: tx lock deadlock fix SCTP: lock_sock_nested in sctp_sock_migrate SCTP: Fix sctp_getsockopt_get_peer_addrs SCTP: update sctp_getsockopt helpers to allow oversized buffers
git-mirror · Jun 30, 2007 · 2d408b4 · 2d408b4
2 parents fde937d + 5f02121
commit 2d408b4
Show file tree

Hide file tree

Showing 3 changed files with 101 additions and 51 deletions.
diff --git a/drivers/net/irda/irport.c b/drivers/net/irda/irport.c
@@ -509,7 +509,7 @@ static void irport_timeout(struct net_device *dev)
 	IRDA_DEBUG(0, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", 
 		   __FUNCTION__, iir, lsr, iobase);
 
-	IRDA_DEBUG(0, "%s(), transmitting=%d, remain=%d, done=%d\n", 
+	IRDA_DEBUG(0, "%s(), transmitting=%d, remain=%d, done=%td\n",
 		   __FUNCTION__, self->transmitting, self->tx_buff.len,
 		   self->tx_buff.data - self->tx_buff.head);
 

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
@@ -72,7 +72,8 @@ static void queue_process(struct work_struct *work)
 			netif_tx_unlock(dev);
 			local_irq_restore(flags);
 
-			schedule_delayed_work(&npinfo->tx_work, HZ/10);
+			if (atomic_read(&npinfo->refcnt))
+				schedule_delayed_work(&npinfo->tx_work, HZ/10);
 			return;
 		}
 		netif_tx_unlock(dev);
@@ -250,22 +251,23 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
 		unsigned long flags;
 
 		local_irq_save(flags);
-		if (netif_tx_trylock(dev)) {
-			/* try until next clock tick */
-			for (tries = jiffies_to_usecs(1)/USEC_PER_POLL;
-					tries > 0; --tries) {
+		/* try until next clock tick */
+		for (tries = jiffies_to_usecs(1)/USEC_PER_POLL;
+		     tries > 0; --tries) {
+			if (netif_tx_trylock(dev)) {
 				if (!netif_queue_stopped(dev))
 					status = dev->hard_start_xmit(skb, dev);
+				netif_tx_unlock(dev);
 
 				if (status == NETDEV_TX_OK)
 					break;
 
-				/* tickle device maybe there is some cleanup */
-				netpoll_poll(np);
-
-				udelay(USEC_PER_POLL);
 			}
-			netif_tx_unlock(dev);
+
+			/* tickle device maybe there is some cleanup */
+			netpoll_poll(np);
+
+			udelay(USEC_PER_POLL);
 		}
 		local_irq_restore(flags);
 	}
@@ -784,9 +786,15 @@ void netpoll_cleanup(struct netpoll *np)
 			if (atomic_dec_and_test(&npinfo->refcnt)) {
 				skb_queue_purge(&npinfo->arp_tx);
 				skb_queue_purge(&npinfo->txq);
-				cancel_rearming_delayed_work(&npinfo->tx_work);
+				cancel_delayed_work(&npinfo->tx_work);
 				flush_scheduled_work();
 
+				/* clean after last, unfinished work */
+				if (!skb_queue_empty(&npinfo->txq)) {
+					struct sk_buff *skb;
+					skb = __skb_dequeue(&npinfo->txq);
+					kfree_skb(skb);
+				}
 				kfree(npinfo);
 			}
 		}