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net: phy: prevent PHYs w/o Clause 22 regs from calling genphy_config_aneg 

genphy_config_aneg() should be called only by PHYs that implement
the Clause 22 register set. Prevent Clause 45 PHYs that don't implement
the register set from calling the genphy function.

Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Camelia Groza 2018-07-23 18:06:15 +03:00 committed by David S. Miller
parent 7e50b2a51d
commit 34786005ec
1 changed files with 8 additions and 2 deletions
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8
drivers/net/phy/phy.c
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@ -471,7 +471,13 @@ static int phy_config_aneg(struct phy_device *phydev)
{ {
if (phydev->drv->config_aneg) if (phydev->drv->config_aneg)
return phydev->drv->config_aneg(phydev); return phydev->drv->config_aneg(phydev);
else
/* Clause 45 PHYs that don't implement Clause 22 registers are not
* allowed to call genphy_config_aneg()
*/
if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0)))
return -EOPNOTSUPP;
return genphy_config_aneg(phydev); return genphy_config_aneg(phydev);
} }