Subject: [PATCH 2.6.18] e1000: fix initialization irqs

From: Dmitry Mishin <[email-masked]>
Date: Wed, 22 Nov 2006 15:49:14 +0300

In case of irqpoll boot option set, e1000 may oops due to:
1) e1000 register it's handler with e1000_request_irq
2) spurious interrupt happens
3) kernel tries to handle this interrupt with all available descs
4) e1000_intr is called and oops due to not initialized clean_rx handler, 
because e1000_up is not called yet.

Solution is to initialize driver before handler registration.

Signed-off-by: Dmitry Mishin <[email-masked]>
Signed-off-by: Pavel Emelianov <[email-masked]>

---
 e1000_main.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

---
--- ./drivers/net/e1000/e1000_main.c.e1000	2006-09-20 07:42:06.000000000 +0400
+++ ./drivers/net/e1000/e1000_main.c	2006-11-22 14:08:15.000000000 +0300
@@ -1206,14 +1206,15 @@ e1000_open(struct net_device *netdev)
 	if ((err = e1000_setup_all_rx_resources(adapter)))
 		goto err_setup_rx;
 
-	err = e1000_request_irq(adapter);
-	if (err)
-		goto err_up;
-
 	e1000_power_up_phy(adapter);
 
 	if ((err = e1000_up(adapter)))
 		goto err_up;
+
+	err = e1000_request_irq(adapter);
+	if (err)
+		goto err_up;
+
 	adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
 	if ((adapter->hw.mng_cookie.status &
 			  E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {