diff options
| author | Andre Edich <andre.edich@microchip.com> | 2021-03-29 11:45:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 09:50:31 +0200 |
| commit | c45cb22a5500c6f45fa6e966400f6afd51e685ad (patch) | |
| tree | 1e3b8c03e10facf60dc7b389397e3c8a496669ce | |
| parent | 897c095c7e9ea3c20875f7d6ff626f8455d3324e (diff) | |
net: phy: lan87xx: fix access to wrong register of LAN87xx
[ Upstream commit fdb5cc6ab3b6a1c0122d3644a63ef9dc7a610d35 ]
The function lan87xx_config_aneg_ext was introduced to configure
LAN95xxA but as well writes to undocumented register of LAN87xx.
This fix prevents that access.
The function lan87xx_config_aneg_ext gets more suitable for the new
behavior name.
Reported-by: Måns Rullgård <mans@mansr.com>
Fixes: 05b35e7eb9a1 ("smsc95xx: add phylib support")
Signed-off-by: Andre Edich <andre.edich@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/phy/smsc.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c index 10722fed666de..caf7291ffaf83 100644 --- a/drivers/net/phy/smsc.c +++ b/drivers/net/phy/smsc.c @@ -152,10 +152,13 @@ static int lan87xx_config_aneg(struct phy_device *phydev) return genphy_config_aneg(phydev); } -static int lan87xx_config_aneg_ext(struct phy_device *phydev) +static int lan95xx_config_aneg_ext(struct phy_device *phydev) { int rc; + if (phydev->phy_id != 0x0007c0f0) /* not (LAN9500A or LAN9505A) */ + return lan87xx_config_aneg(phydev); + /* Extend Manual AutoMDIX timer */ rc = phy_read(phydev, PHY_EDPD_CONFIG); if (rc < 0) @@ -408,7 +411,7 @@ static struct phy_driver smsc_phy_driver[] = { .read_status = lan87xx_read_status, .config_init = smsc_phy_config_init, .soft_reset = smsc_phy_reset, - .config_aneg = lan87xx_config_aneg_ext, + .config_aneg = lan95xx_config_aneg_ext, /* IRQ related */ .ack_interrupt = smsc_phy_ack_interrupt, |