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authorBruce Allan <bruce.w.allan@intel.com>2010-11-24 06:01:30 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2010-12-10 22:13:11 -0800
commitcbd006cb7d4e7b76c6febf7f51e970bced132914 (patch)
tree4cd536bfbec78ea5efc7d67d2e328da367c0cf7b /drivers/net/e1000e
parented5c2b0b78e5467f7948bef92b21f3c76823f392 (diff)
e1000e: 82577/8 must acquire h/w semaphore before workaround
The workaround function e1000_configure_k1_pchlan() assumes the h/w semaphore is already acquired. This was originally missed when setting up the part for the ethtool loopback test. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/e1000e')
-rw-r--r--drivers/net/e1000e/ethtool.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c
index 5c6bc6ac069c..c10dc694d733 100644
--- a/drivers/net/e1000e/ethtool.c
+++ b/drivers/net/e1000e/ethtool.c
@@ -1249,6 +1249,7 @@ static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
u32 ctrl_reg = 0;
u32 stat_reg = 0;
u16 phy_reg = 0;
+ s32 ret_val = 0;
hw->mac.autoneg = 0;
@@ -1308,7 +1309,13 @@ static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
case e1000_phy_82577:
case e1000_phy_82578:
/* Workaround: K1 must be disabled for stable 1Gbps operation */
+ ret_val = hw->phy.ops.acquire(hw);
+ if (ret_val) {
+ e_err("Cannot setup 1Gbps loopback.\n");
+ return ret_val;
+ }
e1000_configure_k1_ich8lan(hw, false);
+ hw->phy.ops.release(hw);
break;
case e1000_phy_82579:
/* Disable PHY energy detect power down */