From dfc707558bb635db98fc6ed8d47c737091707af6 Mon Sep 17 00:00:00 2001
From: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Date: Wed, 28 Aug 2013 02:22:48 +0000
Subject: [PATCH] igb: M88E1543 PHY downshift implementation

This patch implements downshift mechanism for M88E1543 PHY, so that
downshift is disabled first during link setup process, and later enabled
if we are master and downshift link is negotiated. Also cleaned up
return code implementation.

Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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