linux-kernel - Re: [PATCH v1 4/4] bus: hisi_lpc: Don't guard ACPI IDs with ACPI

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Date:   Tue, 5 Jul 2022 16:27:09 +0100
From:   John Garry <john.garry@...wei.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
CC:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 4/4] bus: hisi_lpc: Don't guard ACPI IDs with
 ACPI_PTR()

On 05/07/2022 16:15, Andy Shevchenko wrote:

With a change to the commit message along the line below:

Acked-by: John Garry <john.garry@...wei.com>

> On Tue, Jul 5, 2022 at 5:02 PM John Garry<john.garry@...wei.com>  wrote:
>> On 05/07/2022 12:43, Andy Shevchenko wrote:
>>> The OF is not guarded, neither ACPI needs.
>> This doesn't read well.
> "The OF is not guarded, neither ACPI needs it."
> 
> Better? Otherwise please propose how it can be amended here.

How about "The OF ID table is not guarded, and the ACPI table does not 
needs it either."?

> 
>>> The IDs do not depend
>>> to the configuration. Hence drop ACPI_PTR() from the code and
>>> move ID table closer to its user.
>> Do you need to explicitly include mod_devicetable.h, which has the
>> definition of acpi_device_id?
>>
>> I saw a similar change for another driver and it was claimed that
>> including mod_devicetable.h was required.
> Strictly speaking, yes we need mod_devicetable.h. But of.h and acpi.h
> include it.

acpi.h does not include it for !CONFIG_ACPI, which is the only one which 
I had checked. But now I see that of.h always includes it, so what you 
are doing is ok.

> 
> What you have seen is probably dropping of.h and/or acpi.h completely
> from the user.

Right

> In such cases the mod_devicetable.h is compulsory.

Sure

Thanks,
John