From: Mugunthan V N <mugunthanvnm@ti.com>
Date: Thu, 25 Jun 2015 16:51:02 +0000 (+0530)
Subject: net: phy: fix phy link up when limiting speed via device tree
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~57^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eb686231fce3770299760f24fdcf5ad041f44153;p=pandora-kernel.git

net: phy: fix phy link up when limiting speed via device tree

When limiting phy link speed using "max-speed" to 100mbps or less on a
giga bit phy, phy never completes auto negotiation and phy state
machine is held in PHY_AN. Fixing this issue by comparing the giga
bit advertise though phydev->supported doesn't have it but phy has
BMSR_ESTATEN set. So that auto negotiation is restarted as old and
new advertise are different and link comes up fine.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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