Rather than saving and restoring values, why not just redo the
full setup? This would also determine if the change was a result
of something outside the driver.
--- a/drivers/net/ethernet/marvell/sky2.c 2012-09-18 21:12:01.156438131
-0700
+++ b/drivers/net/ethernet/marvell/sky2.c 2012-09-19 13:20:40.373620276
-0700
@@ -2201,6 +2201,8 @@ static void sky2_link_up(struct sky2_por
sky2_enable_rx_tx(sky2);
+ sky2_set_multicast(sky2->netdev);
+
gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_DEF_MSK);
netif_carrier_on(sky2->netdev);
--
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