Re: [RFC 2/3] ACPI / scan: Fix enumeration for special UART devices

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Hi Lukas,

>>>> --- a/include/acpi/acpi_bus.h
>>>> +++ b/include/acpi/acpi_bus.h
>>>> @@ -211,7 +211,7 @@ struct acpi_device_flags {
>>>> 	u32 of_compatible_ok:1;
>>>> 	u32 coherent_dma:1;
>>>> 	u32 cca_seen:1;
>>>> -	u32 spi_i2c_slave:1;
>>>> +	u32 serial_slave:1;
>>>> 	u32 reserved:19;
>>>> };
>>> I am not an ACPI expert, but wouldn't we better have a serial_bus_slave
>>> here. And the serial_bus_slave can be either UART or I2C? Or have a
>>> pretty good commit message explaining why this is serial_slave only.
>> 
>> I will rename it.
>> serial_bus_slave can be either SPI, I2C or UART
>> (cf. http://elixir.free-electrons.com/linux/latest/source/include/acpi/acrestyp.h#L446).
> 
> Another idea would be to describe the *effect*, rather than the devices
> affected, i.e. something like:
> 
> -	u32 spi_i2c_slave:1;
> +	u32 parent_enumerated:1;
> 
> such that it could be extended to slaves on a non-serial bus in the
> future.

that might work as well. However right now I would be fine with serial_bus_slave here. Since that makes it clear that this is more than just UART devices. It is generic serial bus based devices.

Regards

Marcel

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