LM90_REG_REMOTE_CRIT
val = lm90_read_reg(client, LM90_REG_REMOTE_CRIT);
[REMOTE_CRIT] = LM90_REG_REMOTE_CRIT,
[REMOTE2_CRIT] = LM90_REG_REMOTE_CRIT,
i2c_smbus_read_byte_data(client, LM90_REG_REMOTE_CRIT) == 0xff)
val = lm90_read_reg(client, LM90_REG_REMOTE_CRIT);