diff mbox

net: phy: turn carrier off on phy attach

Message ID 1452805038-27178-1-git-send-email-sjoerd.simons@collabora.co.uk
State Accepted
Commit 113c74d83eef870e43a0d9279044e9d5435f0d07
Headers show

Commit Message

Sjoerd Simons Jan. 14, 2016, 8:57 p.m. UTC
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>


---

 drivers/net/phy/phy_device.c | 5 +++++
 1 file changed, 5 insertions(+)

-- 
2.7.0.rc3

Comments

David Miller Jan. 15, 2016, 7:50 p.m. UTC | #1
From: Sjoerd Simons <sjoerd.simons@collabora.co.uk>

Date: Thu, 14 Jan 2016 21:57:18 +0100

> 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>


Applied, thank you.
diff mbox

Patch

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 0bfbaba..0b407dd 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -668,6 +668,11 @@  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)