sky2: pci posting issues

A couple of the reset and setup paths have possible PCI posting issues.
When setting registers, a read is necessary to force the writes to complete.

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

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index f9c4529299bd..98ad38a5588f 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -869,6 +869,7 @@ static void sky2_wol_init(struct sky2_port *sky2)
 
         /* block receiver */
         sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
+        sky2_read32(hw, B0_CTST);
 }
 
 static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
@@ -2045,6 +2046,8 @@ static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)
 
         sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
         sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
+
+        sky2_read32(hw, B0_CTST);
 }
 
 static void sky2_hw_down(struct sky2_port *sky2)