From 12361acf4d2ca536624e2b7237ce371b29704b30 Mon Sep 17 00:00:00 2001 From: Carolyn Wyborny Date: Sat, 25 Jun 2011 13:18:12 +0000 Subject: igb: Fix lack of flush after register write and before delay commit 064b43304ed8ede8e13ff7b4338d09fd37bcffb1 upstream. Register writes followed by a delay are required to have a flush before the delay in order to commit the values to the register. Without the flush, the code following the delay may not function correctly. Reported-by: Tong Ho Reported-by: Guenter Roeck Signed-off-by: Carolyn Wyborny Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher Signed-off-by: Greg Kroah-Hartman --- drivers/net/igb/e1000_82575.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/igb/e1000_82575.c b/drivers/net/igb/e1000_82575.c index 33352ffa966..d617f2d8969 100644 --- a/drivers/net/igb/e1000_82575.c +++ b/drivers/net/igb/e1000_82575.c @@ -941,6 +941,7 @@ static s32 igb_setup_copper_link_82575(struct e1000_hw *hw) ctrl |= E1000_CTRL_SLU; ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); wr32(E1000_CTRL, ctrl); + wrfl(); ret_val = igb_setup_serdes_link_82575(hw); if (ret_val) -- cgit v1.2.3-18-g5258