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net: phy: force phy suspend when calling phy_stop 

Some ethernet drivers may call phy_start() and phy_stop() from
ndo_open() and ndo_close() respectively.

When network cable is unconnected, and operate like below:
step 1: ifconfig ethX up -> ndo_open -> phy_start ->start
autoneg, and phy is no link.
step 2: ifconfig ethX down -> ndo_close -> phy_stop -> just stop
phy state machine.

This patch forces phy suspend even phydev->link is off.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jian Shen 2019-08-28 09:34:47 +08:00 committed by David S. Miller
parent 8e4a2adced
commit 95fb8bb318
1 changed files with 1 additions and 1 deletions
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2
drivers/net/phy/phy.c
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@ -911,8 +911,8 @@ void phy_state_machine(struct work_struct *work)
if (phydev->link) {
phydev->link = 0;
phy_link_down(phydev, true);
do_suspend = true;
}
do_suspend = true;
break;
}