net: phy: Add general dummy stubs for MMD register access

For some phy devices, even though they don't support the MMD extended
register access, it does have some side effect if we are trying to
read/write the MMD registers via indirect method. So introduce general
dummy stubs for MMD register access which these devices can use to avoid
such side effect.

Fixes: b6b5e8a691 ("gianfar: Disable EEE autoneg by default")
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kevin Hao
2018-03-20 09:44:52 +08:00
committed by David S. Miller
parent ee54a9f9ae
commit 5df7af85ec
2 changed files with 21 additions and 0 deletions

View File

@@ -984,6 +984,10 @@ static inline int genphy_no_soft_reset(struct phy_device *phydev)
{
return 0;
}
int genphy_read_mmd_unsupported(struct phy_device *phdev, int devad,
u16 regnum);
int genphy_write_mmd_unsupported(struct phy_device *phdev, int devnum,
u16 regnum, u16 val);
/* Clause 45 PHY */
int genphy_c45_restart_aneg(struct phy_device *phydev);