Commits
Guenter Roeck committed e0fb6fb6d52
net: ethtool: Return -EOPNOTSUPP if user space tries to read EEPROM with lengh 0 If a driver supports reading EEPROM but no EEPROM is installed in the system, the driver's get_eeprom_len function returns 0. ethtool will subsequently try to read that zero-length EEPROM anyway. If the driver does not support EEPROM access at all, this operation will return -EOPNOTSUPP. If the driver does support EEPROM access but no EEPROM is installed, the operation will return -EINVAL. Return -EOPNOTSUPP in both cases for consistency. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>