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igb: Workaround for global device reset problem on 82580.

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Due to a hw errata, the global device reset doesn't always work on 82580
devices.  This patch works around the problem not trying to do a global
device reset on these devices.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@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:
Carolyn Wyborny 2012-11-22 01:24:08 +00:00 committed by Jeff Kirsher
parent 7916a53d20
commit a0483e2eb6
1 changed files with 6 additions and 0 deletions
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6
drivers/net/ethernet/intel/igb/e1000_82575.c
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@ -1927,6 +1927,12 @@ static s32 igb_reset_hw_82580(struct e1000_hw *hw)
hw->dev_spec._82575.global_device_reset = false;
/* due to hw errata, global device reset doesn't always
* work on 82580
*/
if (hw->mac.type == e1000_82580)
global_device_reset = false;
/* Get current control state. */
ctrl = rd32(E1000_CTRL);