From: Stephen Hemminger <shemminger@vyatta.com>
Date: Wed, 17 Jun 2009 07:30:34 +0000 (+0000)
Subject: sky2: PCI irq issues
X-Git-Tag: v2.6.31-rc1~14^2~59
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1fd82f3cafa8e7854db08eccbdb8a9218225e1ef;p=platform%2Fkernel%2Flinux-3.10.git

sky2: PCI irq issues

Add some read's to avoid any PCI posting issues when controlling
irq's.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index e4e24ee..cc1c8d1 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1495,6 +1495,7 @@ static int sky2_up(struct net_device *dev)
 	imask = sky2_read32(hw, B0_IMSK);
 	imask |= portirq_msk[port];
 	sky2_write32(hw, B0_IMSK, imask);
+	sky2_read32(hw, B0_IMSK);
 
 	sky2_set_multicast(dev);
 
@@ -1812,6 +1813,7 @@ static int sky2_down(struct net_device *dev)
 	imask = sky2_read32(hw, B0_IMSK);
 	imask &= ~portirq_msk[port];
 	sky2_write32(hw, B0_IMSK, imask);
+	sky2_read32(hw, B0_IMSK);
 
 	synchronize_irq(hw->pdev->irq);