RE: [PATCH v9 5/7] ACPI: Translate the I/O range of non-MMIO devices before scanning

[Gabriele Paoloni]

Hi Mika

> -----Original Message-----
> From: Mika Westerberg [mailto:mika.westerberg@xxxxxxxxxxxxxxx]
> Sent: 19 June 2017 11:02
> To: Gabriele Paoloni
> Cc: Rafael J. Wysocki; Lorenzo Pieralisi; Rafael J. Wysocki;
> catalin.marinas@xxxxxxx; will.deacon@xxxxxxx; robh+dt@xxxxxxxxxx;
> frowand.list@xxxxxxxxx; bhelgaas@xxxxxxxxxx; arnd@xxxxxxxx; linux-arm-
> kernel@xxxxxxxxxxxxxxxxxxx; mark.rutland@xxxxxxx;
> brian.starkey@xxxxxxx; olof@xxxxxxxxx; benh@xxxxxxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; linux-acpi@xxxxxxxxxxxxxxx; Linuxarm; linux-
> pci@xxxxxxxxxxxxxxx; minyard@xxxxxxx; John Garry; xuwei (O)
> Subject: Re: [PATCH v9 5/7] ACPI: Translate the I/O range of non-MMIO
> devices before scanning
> 
> On Mon, Jun 19, 2017 at 09:50:49AM +0000, Gabriele Paoloni wrote:
> > Many thanks for your response and your help here.
> >
> > I guess that as conclusion with respect to the current v9 patchset we
> can
> > disregard the idea of MFD and modify the current v9 so that it
> doesn't
> > touch directly ACPI resources.
> > Instead as I proposed before we can have the scan handler to
> enumerate
> > the children devices and translate its addresses filling dev-
> >resources[] and
> > at the same time we can modify acpi_default_enumeration to check
> > acpi_device_enumerated() before continuing with device
> enumeration...?
> >
> > Do you think it as a viable solution?
> 
> No, I think MFD + scan handler inside the MFD driver is the way to go.
> We don't want to trash ACPI core with stuff that does not belong there
> IMHO.

Ok Many thanks I will investigate this direction 

> 
> Also you don't need to modify acpi_default_enumeration() because you
> can
> mark your device enumerated in the MFD driver. So all the dirty details
> will be in the MFD driver and not in ACPI core.

Ok got it :)

Cheers
Gab