From e65fa87c225fadd1980068b7d360e08ac0e985dd Mon Sep 17 00:00:00 2001 From: Bruce Allan Date: Wed, 1 Jul 2009 13:27:31 +0000 Subject: e1000e: PHY loopback broken on 82578 PHY loopback on 82578 fails to work as a result of flushing the packets in the FIFO buffer in the link stall workaround. Don't perform the workaround if in PHY loopback mode. Signed-off-by: Bruce Allan Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/e1000e/phy.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/net/e1000e/phy.c') diff --git a/drivers/net/e1000e/phy.c b/drivers/net/e1000e/phy.c index e23459cf3d0..d8453946bff 100644 --- a/drivers/net/e1000e/phy.c +++ b/drivers/net/e1000e/phy.c @@ -2737,6 +2737,11 @@ s32 e1000_link_stall_workaround_hv(struct e1000_hw *hw) if (hw->phy.type != e1000_phy_82578) goto out; + /* Do not apply workaround if in PHY loopback bit 14 set */ + hw->phy.ops.read_phy_reg(hw, PHY_CONTROL, &data); + if (data & PHY_CONTROL_LB) + goto out; + /* check if link is up and at 1Gbps */ ret_val = hw->phy.ops.read_phy_reg(hw, BM_CS_STATUS, &data); if (ret_val) -- cgit v1.2.3