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net: phy: on phy device create do not initialize link to 1 

Currently when phy device is created the link variable is
initialized to 1 which denoted phy link is already up. On a power
reset there is no issue as phy status register link status will
not be set, so phy auto negotiate will be started. But when a cpu
reset is issued (ex: dra72x-evm) phy's link status bit is already
set which leads to assume that link is already setup in
genphy_update_link() initial check which results in ehternet not
working. So do not assume that link is already up and on phy
device create set link to zero. This is verified on dra72x-evm.

Reported-by: Franklin S Cooper Jr <fcooper@ti.com>
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Mugunthan V N 2015-09-03 15:50:21 +05:30 committed by Joe Hershberger
parent 1f8836396d
commit 26d3acdab8
1 changed files with 1 additions and 1 deletions
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2
drivers/net/phy/phy.c
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@ -571,7 +571,7 @@ static struct phy_device *phy_device_create(struct mii_dev *bus, int addr,
memset(dev, 0, sizeof(*dev));
dev->duplex = -1;
dev->link = 1;
dev->link = 0;
dev->interface = interface;
dev->autoneg = AUTONEG_ENABLE;