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>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index e4e24ee00fb2..cc1c8d13845f 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);