e1000: FIX: Stop raw interrupts disabled nag from RT
Current e1000_xmit_frame spews raw interrupt disabled nag messages when
used with RT kernel patches. This patch uses spin_trylock_irqsave,
which allows RT patches to properly manage the irq semantics.
Signed-off-by: Mark Huth <mhuth@mvista.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index dd66f88..eb3ff1f 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -3378,12 +3378,9 @@
(adapter->hw.mac_type == e1000_82573))
e1000_transfer_dhcp_info(adapter, skb);
- local_irq_save(flags);
- if (!spin_trylock(&tx_ring->tx_lock)) {
+ if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags))
/* Collision - tell upper layer to requeue */
- local_irq_restore(flags);
return NETDEV_TX_LOCKED;
- }
/* need: count + 2 desc gap to keep tail from touching
* head, otherwise try next time */