> +static int rtq9128_i2c_write(void *context, const void *data, size_t count)
> +{
> + struct device *dev = context;
> + struct i2c_client *i2c = to_i2c_client(dev);
> + u8 reg = *(u8 *)data;
> + int rg_size;
> +
> + BUG_ON(count != 5);
is this really necessary? Just log and error and return?
same comments for other functions
> + rg_size = rtq9128_get_reg_size(reg);
> + return i2c_smbus_write_i2c_block_data(i2c, reg, rg_size, data + count - rg_size);
> +}
