W83795_REG_BANKSEL
bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank);