diff options
| author |   Bruce Allan <bruce.w.allan@intel.com> | 2009-11-20 23:24:11 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2009-11-21 11:33:58 -0800 |
| commit | bb436b20fe0ea4231a233aae7f0f7de3a3f2f5c3 (patch) | |
| tree | 168d6084a2d2352c7236d13a4b2d9b1db37051d3 /drivers/net/e1000e/ethtool.c | |
| parent | e1000e: improper return code signage (diff) | |
| download | linux-dev-bb436b20fe0ea4231a233aae7f0f7de3a3f2f5c3.tar.xz linux-dev-bb436b20fe0ea4231a233aae7f0f7de3a3f2f5c3.zip | |
e1000e: disable K1 on PCH LOM when in PHY loopback mode
When performing the ethtool PHY loopback test on PCH-based LOMs (82577 and
82578), disable K1 (a MAC-PHY interconnect low power mode) otherwise
packets might get corrupted.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/e1000e/ethtool.c')
| -rw-r--r-- | drivers/net/e1000e/ethtool.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c index 67e06fd9fc45..fd7921482d2b 100644 --- a/drivers/net/e1000e/ethtool.c +++ b/drivers/net/e1000e/ethtool.c @@ -1260,6 +1260,10 @@ static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter) hw->mac.autoneg = 0; + /* Workaround: K1 must be disabled for stable 1Gbps operation */ + if (hw->mac.type == e1000_pchlan) + e1000_configure_k1_ich8lan(hw, false); + if (hw->phy.type == e1000_phy_m88) { /* Auto-MDI/MDIX Off */ e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, 0x0808); |