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igb: Force flow control off during reset when forcing speed. 

During igb_reset(), we initiate a hardware reset which will clear our
flow control settings. For auto-negotiation, we re-negotiate them when
linking up again, but we need to force them off properly for the forced
speed case.

Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Matthew Vick 2012-04-18 02:57:44 +00:00 committed by Jeff Kirsher
parent bdc125f73f
commit a27416bbca
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ethernet/intel/igb/igb_main.c
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@ -1715,6 +1715,13 @@ void igb_reset(struct igb_adapter *adapter)
if (hw->mac.ops.init_hw(hw))
dev_err(&pdev->dev, "Hardware Error\n");
/*
* Flow control settings reset on hardware reset, so guarantee flow
* control is off when forcing speed.
*/
if (!hw->mac.autoneg)
igb_force_mac_fc(hw);
igb_init_dmac(adapter, pba);
if (!netif_running(adapter->netdev))
igb_power_down_link(adapter);