[patch, -rc5-mm1] locking validator: special rule: 8390.c disable_irq()

[Ingo Molnar <mingo@elte.hu>]

untested on 8390 hardware, but ought to solve the lockdep false 
positive.

-----------------
Subject: locking validator: special rule: 8390.c disable_irq()
From: Ingo Molnar <mingo@elte.hu>

8390.c knows that ei_local->page_lock can only be used by an irq
context that it disabled - and can hence take the ->page_lock
without disabling hardirqs. Teach lockdep about this.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 drivers/net/8390.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: linux/drivers/net/8390.c
===================================================================
--- linux.orig/drivers/net/8390.c
+++ linux/drivers/net/8390.c
@@ -249,7 +249,7 @@ void ei_tx_timeout(struct net_device *de
 
 	/* Ugly but a reset can be slow, yet must be protected */
 		
-	disable_irq_nosync(dev->irq);
+	disable_irq_nosync_lockdep(dev->irq);
 	spin_lock(&ei_local->page_lock);
 		
 	/* Try to restart the card.  Perhaps the user has fixed something. */
@@ -257,7 +257,7 @@ void ei_tx_timeout(struct net_device *de
 	NS8390_init(dev, 1);
 		
 	spin_unlock(&ei_local->page_lock);
-	enable_irq(dev->irq);
+	enable_irq_lockdep(dev->irq);
 	netif_wake_queue(dev);
 }