diff options
| author | Michael Walle <michael@walle.cc> | 2022-03-29 01:03:50 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2022-03-29 11:47:24 +0300 |
| commit | ad7da1ce5749c0eb4f09dd7e5510123be56f10fb (patch) | |
| tree | b976080c4d478eceb538f851162b4121000b4318 /drivers/net | |
| parent | 807ca64e154638c7540f3dfb48a2b9a8a58385d0 (diff) | |
| download | linux-ad7da1ce5749c0eb4f09dd7e5510123be56f10fb.tar.xz | |
net: lan966x: fix kernel oops on ioctl when I/F is down
ioctls handled by phy_mii_ioctl() will cause a kernel oops when the
interface is down. Fix it by making sure there is a PHY attached.
Fixes: 735fec995b21 ("net: lan966x: Implement SIOCSHWTSTAMP and SIOCGHWTSTAMP")
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220328220350.3118969-1-michael@walle.cc
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/microchip/lan966x/lan966x_main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c index e1bcb28039dc..1f8c67f0261b 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c @@ -408,6 +408,9 @@ static int lan966x_port_ioctl(struct net_device *dev, struct ifreq *ifr, } } + if (!dev->phydev) + return -ENODEV; + return phy_mii_ioctl(dev->phydev, ifr, cmd); } |