It shouldn't happen, but can happen that readable eeprom size is smaller
than announced. Then we would be stuck in an endless loop here because
after reaching the actual end reads return eeprom.len = 0. I faced this
issue when making a mistake in driver development. Detect this scenario
and return an error.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ret = getter(dev, &eeprom, data);
if (ret)
break;
+ if (!eeprom.len) {
+ ret = -EIO;
+ break;
+ }
if (copy_to_user(userbuf, data, eeprom.len)) {
ret = -EFAULT;
break;