From: Andrew Lunn andrew@lunn.ch
commit 707293a56f95f8e7e0cfae008010c7933fb68973 upstream.
Split phy_start_aneg into a wrapper which takes the PHY lock, and a helper doing the real work. This will be needed when phy_ethtook_ksettings_set takes the lock.
Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support") Signed-off-by: Andrew Lunn andrew@lunn.ch Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/phy/phy.c | 30 ++++++++++++++++++++++++------ 1 file changed, 24 insertions(+), 6 deletions(-)
--- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -700,7 +700,7 @@ static int phy_check_link_status(struct }
/** - * phy_start_aneg - start auto-negotiation for this PHY device + * _phy_start_aneg - start auto-negotiation for this PHY device * @phydev: the phy_device struct * * Description: Sanitizes the settings (if we're not autonegotiating @@ -708,25 +708,43 @@ static int phy_check_link_status(struct * If the PHYCONTROL Layer is operating, we change the state to * reflect the beginning of Auto-negotiation or forcing. */ -int phy_start_aneg(struct phy_device *phydev) +static int _phy_start_aneg(struct phy_device *phydev) { int err;
+ lockdep_assert_held(&phydev->lock); + if (!phydev->drv) return -EIO;
- mutex_lock(&phydev->lock); - if (AUTONEG_DISABLE == phydev->autoneg) phy_sanitize_settings(phydev);
err = phy_config_aneg(phydev); if (err < 0) - goto out_unlock; + return err;
if (phy_is_started(phydev)) err = phy_check_link_status(phydev); -out_unlock: + + return err; +} + +/** + * phy_start_aneg - start auto-negotiation for this PHY device + * @phydev: the phy_device struct + * + * Description: Sanitizes the settings (if we're not autonegotiating + * them), and then calls the driver's config_aneg function. + * If the PHYCONTROL Layer is operating, we change the state to + * reflect the beginning of Auto-negotiation or forcing. + */ +int phy_start_aneg(struct phy_device *phydev) +{ + int err; + + mutex_lock(&phydev->lock); + err = _phy_start_aneg(phydev); mutex_unlock(&phydev->lock);
return err;