linux-kernel - [PATCH] net: phy: fix phy device autoneg wrong value

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Date:	Thu, 22 Jan 2015 17:56:44 +0000
From:	Nicolae Rosia <nicolae.rosia@...tsign.ro>
To:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"f.fainelli@...il.com" <f.fainelli@...il.com>
Subject: [PATCH] net: phy: fix phy device autoneg wrong value

In phy_device_create, autoneg is set to AUTONEG_ENABLE.
When using the generic phy driver (phy_device.c),
genphy_config_init reads BMSR and finds out if autonegotiation
is possible and sets the phy device features accordingly.
phy_sanitize_settings is supposed to set the right value of
autoneg, but it is never called if autonegotiation is enabled,
which is always the case.

Signed-off-by: Nicolae Rosia <nicolae.rosia@...tsign.ro>
---
 drivers/net/phy/phy.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 767cd11..9c35136 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -249,9 +249,6 @@ static void phy_sanitize_settings(struct phy_device
*phydev)
 	unsigned int idx;
 
 	/* Sanitize settings based on PHY capabilities */
-	if ((features & SUPPORTED_Autoneg) == 0)
-		phydev->autoneg = AUTONEG_DISABLE;
-
 	idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex),
 			features);
 
@@ -436,6 +433,9 @@ int phy_start_aneg(struct phy_device *phydev)
 
 	mutex_lock(&phydev->lock);
 
+	if ((phydev->supported & SUPPORTED_Autoneg) == 0)
+		phydev->autoneg = AUTONEG_DISABLE;
+
 	if (AUTONEG_DISABLE == phydev->autoneg)
 		phy_sanitize_settings(phydev);
 
-- 
2.1.0