Re: [PATCH v3] hisi_lpc: Use acpi_dev_for_each_child()

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On Tue, Jul 5, 2022 at 12:16 PM John Garry <john.garry@xxxxxxxxxx> wrote:
> On 05/07/2022 10:39, Andy Shevchenko wrote:
> > On Tue, Jul 5, 2022 at 11:38 AM Andy Shevchenko
> > <andy.shevchenko@xxxxxxxxx>  wrote:
> >> On Tue, Jul 5, 2022 at 10:37 AM John Garry<john.garry@xxxxxxxxxx>  wrote:

...

> >> John, I believe now you may send a formal clean up to convert to platform_device
> > Hit Enter too early:-)
> >
> > ...to platform_device_register_full().
>
> Sure, I can look at that now. But I just found where we previously
> mentioned the possibility of factoring out some of the ACPI platform
> device creation code:
>
> https://lore.kernel.org/linux-acpi/CAHp75VfOa5pN4MKT-aQmWBwPGWsOaQupyfrN-weWwfR3vMLtuA@xxxxxxxxxxxxxx/
>
> There is actually still a comment in the hisi_lpc driver - I should have
> checked there first :)
>
> So my impression is that the hisi_lpc code is almost the same in
> acpi_create_platform_device(), apart from we need do the resource fixup
> in hisi_lpc_acpi_set_io_res().
>
> So we could factor out by dividing acpi_create_platform_device() into 2x
> parts: resource get and then platform dev create. But that does not seem
> wise as we have 2x parts which don't make sense on their own. Or else
> pass a fixup callback into acpi_create_platform_device(). Any other
> ideas if we want to go this way?

I prefer having an ops or so structure where you can pass ->fixup()
and/or ->xlate() function, Btw, it looks like the code in hisi_lpc
needs a lot of cleanups.

-- 
With Best Regards,
Andy Shevchenko



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