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

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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 <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Camelia Groza authored and David S. Miller committed 2018-07-25 13:02:37 -07:00
1 parent 7e50b2a51d
commit 34786005ec
1 file changed
+8 -2
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drivers/net/phy/phy.c
+8 -2
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@@ -471,8 +471,14 @@ static int phy_config_aneg(struct phy_device *phydev)
{
if (phydev->drv->config_aneg)
return phydev->drv->config_aneg(phydev);
else
return genphy_config_aneg(phydev);
/* 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);
}
/**