LM90_REG_STATUS
val = lm90_read_reg(client, LM90_REG_STATUS);
LM90_REG_STATUS, LM90_REG_LOCAL_TEMP, LM90_REG_LOCAL_HIGH,
int status = i2c_smbus_read_byte_data(client, LM90_REG_STATUS);
int status = i2c_smbus_read_byte_data(client, LM90_REG_STATUS);
int status = i2c_smbus_read_byte_data(client, LM90_REG_STATUS);
regval = i2c_smbus_read_byte_data(client, LM90_REG_STATUS);