| Message ID | 20150429222328.18201.67366.stgit@htfujina-fc.jf.intel.com |
|---|---|
| State | Accepted |
| Delegated to: | Jeff Kirsher |
| Headers | show |
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces@lists.osuosl.org] On > Behalf Of Todd Fujinaka > Sent: Wednesday, April 29, 2015 3:23 PM > To: intel-wired-lan@lists.osuosl.org > Subject: [Intel-wired-lan] [PATCH] igb: Fix i354 88E1112 PHY on RCC boards > using AutoMediaDetect > > e1000_check_for_link_media_swap() checks PHY page 0 for copper and PHY > page 1 for "other" (fiber) link. The switch back from page 1 to page 0 > happened too soon, before e1000_check_for_link_82575() is executed, and > link on fiber (other) was never detected. Check for link while still on > the proper PHY page. > > Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com> > --- > drivers/net/ethernet/intel/igb/e1000_82575.c | 18 +++++++++++++----- > 1 file changed, 13 insertions(+), 5 deletions(-) Tested-by: Aaron Brown <aaron.f.brown@intel.com>
diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c index b0182dd..d192569 100644 --- a/drivers/net/ethernet/intel/igb/e1000_82575.c +++ b/drivers/net/ethernet/intel/igb/e1000_82575.c @@ -139,10 +139,6 @@ static s32 igb_check_for_link_media_swap(struct e1000_hw *hw) if (ret_val) return ret_val; - /* reset page to 0 */ - ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0); - if (ret_val) - return ret_val; if (data & E1000_M88E1112_STATUS_LINK) port = E1000_MEDIA_PORT_OTHER; @@ -151,8 +147,20 @@ static s32 igb_check_for_link_media_swap(struct e1000_hw *hw) if (port && (hw->dev_spec._82575.media_port != port)) { hw->dev_spec._82575.media_port = port; hw->dev_spec._82575.media_changed = true; + } + + if (port == E1000_MEDIA_PORT_COPPER) { + /* reset page to 0 */ + ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0); + if (ret_val) + return ret_val; + igb_check_for_link_82575(hw); } else { - ret_val = igb_check_for_link_82575(hw); + igb_check_for_link_82575(hw); + /* reset page to 0 */ + ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0); + if (ret_val) + return ret_val; } return 0;
e1000_check_for_link_media_swap() checks PHY page 0 for copper and PHY page 1 for "other" (fiber) link. The switch back from page 1 to page 0 happened too soon, before e1000_check_for_link_82575() is executed, and link on fiber (other) was never detected. Check for link while still on the proper PHY page. Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com> --- drivers/net/ethernet/intel/igb/e1000_82575.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-)