linux-kernel - Re: [PATCH V6 09/11] ACPI: introduce flag .is_master

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20140521110444.GU1651@lahna.fi.intel.com>
Date:	Wed, 21 May 2014 14:04:44 +0300
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	Zhang Rui <rui.zhang@...el.com>, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, bhelgaas@...gle.com,
	matthew.garrett@...ula.com, rafael.j.wysocki@...el.com,
	dmitry.torokhov@...il.com
Subject: Re: [PATCH V6 09/11] ACPI: introduce flag .is_master_device

On Wed, May 21, 2014 at 01:10:33PM +0200, Rafael J. Wysocki wrote:
> 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.

OK.

> 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).

That sounds better to me.

I wonder if we can do this analogous to of_platform_bus_probe() and
friends?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/