From: Ioana Ciornei ioana.ciornei@nxp.com
[ Upstream commit 82c76aca81187b3d28a6fb3062f6916450ce955e ]
In general, we don't want MAC drivers calling phy_attach_direct with the net_device being NULL. Add checks against this in all the functions calling it: phy_attach() and phy_connect_direct().
Signed-off-by: Ioana Ciornei ioana.ciornei@nxp.com Suggested-by: Andrew Lunn andrew@lunn.ch Reviewed-by: Andrew Lunn andrew@lunn.ch Reviewed-by: Florian Fainelli f.fainelli@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/phy/phy_device.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 8a96d985a52f..6144146aec29 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -757,6 +757,9 @@ int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, { int rc;
+ if (!dev) + return -EINVAL; + rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface); if (rc) return rc; @@ -1098,6 +1101,9 @@ struct phy_device *phy_attach(struct net_device *dev, const char *bus_id, struct device *d; int rc;
+ if (!dev) + return ERR_PTR(-EINVAL); + /* Search the list of PHY devices on the mdio bus for the * PHY with the requested name */