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>
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index f9c4529..98ad38a 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -869,6 +869,7 @@
/* 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 @@
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)