[PATCH] lockdep: annotate 8390.c disable_irq()

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.

Has no effect on non-lockdep kernels.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/net/8390.c b/drivers/net/8390.c
index 86be96a..d2935ae 100644 (file)
--- a/drivers/net/8390.c
+++ b/drivers/net/8390.c
@@ -249,7 +249,7 @@ void ei_tx_timeout(struct net_device *dev)
 
        /* 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 *dev)
        NS8390_init(dev, 1);
                
        spin_unlock(&ei_local->page_lock);
-       enable_irq(dev->irq);
+       enable_irq_lockdep(dev->irq);
        netif_wake_queue(dev);
 }