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net: phy: turn carrier off on phy attach 

The operstate of a networking device initially IF_OPER_UNKNOWN aka
"unknown", updated on carrier state changes (with carrier state being on
by default). This means it will stay unknown unless the carrier state
goes to off at some point, which is not the case if the phy is already
up/connected at startup.

Explicitly turn off the carrier on phy attach, leaving the phy state
machine to turn the carrier on when it has done the initial negotiation.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sjoerd Simons 2016-01-14 21:57:18 +01:00 committed by David S. Miller
parent 244683749e
commit 113c74d83e
1 changed files with 5 additions and 0 deletions
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5
drivers/net/phy/phy_device.c
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@ -901,6 +901,11 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
phydev->state = PHY_READY;
/* Initial carrier state is off as the phy is about to be
* (re)initialized.
*/
netif_carrier_off(phydev->attached_dev);
/* Do initial configuration here, now that
* we have certain key parameters
* (dev_flags and interface)