linux-kernel - Re: [PATCH] ACPI: add Haswell LPSS devices to acpi_platform_device

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Message-ID: <20121207111415.GH23611@intel.com>
Date:	Fri, 7 Dec 2012 13:14:15 +0200
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	linux-acpi@...r.kernel.org,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Len Brown <lenb@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ACPI: add Haswell LPSS devices to
 acpi_platform_device_ids list

On Fri, Dec 07, 2012 at 11:01:26AM +0000, Alan Cox wrote:
> On Fri,  7 Dec 2012 12:08:02 +0200
> Mika Westerberg <mika.westerberg@...ux.intel.com> wrote:
> 
> > All devices behind Haswell LPSS (Low Power Subsystem) should be represented
> > as platform devices 
> 
> What about the bus heirarchy ? What about making sure they appear in the
> PCI resource heirarchy so we don't mash them up if we reassign or
> allocate other resources on the bus ?

I'm not sure if I understand what you mean here.

We put them in hierarchy if the parent ACPI node has also a physical device
bound to it (like PCIe root port).
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