From: Raanan Avargil <raanan.avargil@intel.com>
Date: Tue, 22 Dec 2015 13:35:03 +0000 (+0200)
Subject: e1000e: Set HW FIFO minimum pointer gap for non-gig speeds
X-Git-Tag: v4.9.8~2476^2~172^2~12
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c26f40daf4e32f970b8337a88b65a8d00332ae6f;p=platform%2Fkernel%2Flinux-rpi3.git

e1000e: Set HW FIFO minimum pointer gap for non-gig speeds

Based on feedback from HW team, the configured value of the internal PHY
HW FIFO pointer gap was incorrect for non-gig speeds.
This patch provides the correct configuration.

Signed-off-by: Raanan Avargil <raanan.avargil@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c
index 786d214..e7ccf5f 100644
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
@@ -1479,6 +1479,18 @@ static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw)
 				hw->phy.ops.release(hw);
 				if (ret_val)
 					return ret_val;
+			} else {
+				ret_val = hw->phy.ops.acquire(hw);
+				if (ret_val)
+					return ret_val;
+
+				ret_val = e1e_wphy_locked(hw,
+							  PHY_REG(776, 20),
+							  0xC023);
+				hw->phy.ops.release(hw);
+				if (ret_val)
+					return ret_val;
+
 			}
 		}
 	}