If mdiobus_get_phy() is called with an invalid addr parameter, then the
caller has a bug. Print a call trace to help identifying the caller.
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/daec3f08-6192-ba79-f74b-5beb436cab6c@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr)
{
+ bool addr_valid = addr >= 0 && addr < ARRAY_SIZE(bus->mdio_map);
struct mdio_device *mdiodev;
- if (addr < 0 || addr >= ARRAY_SIZE(bus->mdio_map))
+ if (WARN_ONCE(!addr_valid, "addr %d out of range\n", addr))
return NULL;
mdiodev = bus->mdio_map[addr];