Patch "ixgbe: Configure advertised speeds correctly for KR/KX backplane" has been added to the 4.9-stable tree

Patch "ixgbe: Configure advertised speeds correctly for KR/KX backplane" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    ixgbe: Configure advertised speeds correctly for KR/KX backplane

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ixgbe-configure-advertised-speeds-correctly-for-kr-kx-backplane.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Sun Nov 19 11:32:28 CET 2017
From: Don Skidmore <donald.c.skidmore@intel.com>
Date: Tue, 13 Dec 2016 20:34:51 -0500
Subject: ixgbe: Configure advertised speeds correctly for KR/KX backplane

From: Don Skidmore <donald.c.skidmore@intel.com>


[ Upstream commit 54f6d4c42451dbd2cc7e0f0bd8fc3eddcab511fe ]

This patch ensures that the advertised link speeds are configured
for X553 KR/KX backplane.  Without this patch the link remains at
1G when resuming from low power after being downshifted by LPLU.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
@@ -1995,12 +1995,11 @@ static s32 ixgbe_setup_kx4_x550em(struct
 /**
  * ixgbe_setup_kr_x550em - Configure the KR PHY
  * @hw: pointer to hardware structure
- *
- * Configures the integrated KR PHY for X550EM_x.
  **/
 static s32 ixgbe_setup_kr_x550em(struct ixgbe_hw *hw)
 {
-	if (hw->mac.type != ixgbe_mac_X550EM_x)
+	/* leave link alone for 2.5G */
+	if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_2_5GB_FULL)
 		return 0;
 
 	return ixgbe_setup_kr_speed_x550em(hw, hw->phy.autoneg_advertised);


Patches currently in stable-queue which might be from donald.c.skidmore@intel.com are

queue-4.9/ixgbe-configure-advertised-speeds-correctly-for-kr-kx-backplane.patch