Re: [PATCH 00/10] fujitsu-laptop: use device-specific data instead of module-wide globals

From: Andy Shevchenko
Date: Sat May 06 2017 - 10:23:19 EST

On Sat, May 6, 2017 at 5:21 PM, Andy Shevchenko
<andy.shevchenko@xxxxxxxxx> wrote:
> On Sat, May 6, 2017 at 3:45 PM, MichaÅ KÄpieÅ <kernel@xxxxxxxxxx> wrote:
>> To be fair, one thing that may be "unnatural" with this approach is that
>> even though fujitsu-backlight would depend on fujitsu-laptop, it would
>> still have to get a handle to FUJ02E3 using:
>> acpi_get_handle(NULL, "\\_SB.FEXT", ...)
>> because call_fext_func() - and thus fext_backlight() - needs to be
>> passed a handle to FUJ02E3 and the two ACPI devices (FUJ02B1 handled by
>> fujitsu-backlight and FUJ02E3 handled by fujitsu-laptop) are not related
>> from the perspective of the ACPI device hierarchy. Unless there is a
>> better way of implementing this, in which case I am open to suggestions.
> There are two areas to check with:
> 1. Remote graph node
> 2. Component framework (only works in case when all devices are
> mandatory to have).

Ah, and third one is MFD framework.

With Best Regards,
Andy Shevchenko