From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Zhang Rui <rui.zhang@intel.com>,
linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
bhelgaas@google.com, matthew.garrett@nebula.com,
rafael.j.wysocki@intel.com, dmitry.torokhov@gmail.com
Subject: Re: [PATCH V6 09/11] ACPI: introduce flag .is_master_device
Date: Wed, 21 May 2014 13:10:33 +0200 [thread overview]
Message-ID: <2394524.GkgpdWbBbP@vostro.rjw.lan> (raw)
In-Reply-To: <20140521085207.GR1651@lahna.fi.intel.com>
On Wednesday, May 21, 2014 11:52:07 AM Mika Westerberg wrote:
> On Thu, May 15, 2014 at 02:44:14PM +0800, Zhang Rui wrote:
> > For some ACPI device objects, they represent master devices,
> > and their children devices are enumerated by bus controller drivers
> > for the buses they are on.
> >
> > In this case, we do not want to enumerate their children devices to
> > platform bus explicitly in acpi scan code.
> >
> > Thus a new flag .is_master_device is introduced in this patch.
> >
> > For devices with this flag set, we will not do default enumeration
> > for their children.
>
> Is there any particular reason we would like to enumerate everything
> below the first device by default?
Yes, there is. Device objects without _ADR under the PCI host bridge.
Or we can skip the children under every *platform* device created by this by
default and mark the ones where we want the children to be enumerated as
platform devices too in a special way if needed.
I guess we could try that (that was the Rui's original idea IIRC).
Rafael
next prev parent reply other threads:[~2014-05-21 10:53 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-15 6:44 [PATCH V6 00/11] ACPI: ACPI enumeration rework Zhang Rui
2014-05-15 6:44 ` [PATCH V6 01/11] ACPI: introduce .match() callback for ACPI scan handler Zhang Rui
2014-05-15 6:44 ` [PATCH V6 02/11] PNPACPI: use whilte list for pnpacpi device enumeration Zhang Rui
2014-05-15 6:44 ` [PATCH V6 03/11] ACPI: remove ids that does not comply with the ACPI PNP id rule Zhang Rui
2014-05-15 6:44 ` [PATCH V6 04/11] ACPI: remove unsupported serial PNP ids from acpi pnp scan handler id lsit Zhang Rui
2014-05-15 6:44 ` [PATCH V6 05/11] ACPI: introduce dummy container scan handler Zhang Rui
2014-05-15 6:44 ` [PATCH V6 06/11] ACPI: introduce dummy memory hotplug " Zhang Rui
2014-05-15 6:44 ` [PATCH V6 07/11] ACPI: introduce dummy lpss " Zhang Rui
2014-05-21 8:48 ` Mika Westerberg
2014-05-21 14:56 ` Zhang Rui
2014-05-22 9:57 ` Mika Westerberg
2014-05-15 6:44 ` [PATCH V6 08/11] ACPI: introduce platform_id flag Zhang Rui
2014-05-15 6:44 ` [PATCH V6 09/11] ACPI: introduce flag .is_master_device Zhang Rui
2014-05-21 8:52 ` Mika Westerberg
2014-05-21 11:10 ` Rafael J. Wysocki [this message]
2014-05-21 11:04 ` Mika Westerberg
2014-05-21 11:59 ` Rafael J. Wysocki
2014-05-21 15:09 ` Zhang Rui
2014-05-22 8:08 ` Mika Westerberg
2014-05-21 14:43 ` Zhang Rui
2014-05-22 8:51 ` Mika Westerberg
2014-05-22 14:26 ` Zhang Rui
2014-05-15 6:44 ` [PATCH V6 10/11] ACPI: use platform bus as the default bus for _HID enumeration Zhang Rui
2014-05-22 9:58 ` Mika Westerberg
2014-05-15 6:44 ` [PATCH V6 11/11] ACPI: introduce acpi platform exclude id list Zhang Rui
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