linux-kernel - Re: [PATCH 0/2] ACPI / scan: Remove useless #ifndef and simplify container driver

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Date:	Fri, 08 Feb 2013 13:46:40 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
Cc:	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Matthew Garrett <matthew.garrett@...ula.com>,
	Yinghai Lu <yinghai@...nel.org>, Jiang Liu <liuj97@...il.com>,
	Toshi Kani <toshi.kani@...com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/2] ACPI / scan: Remove useless #ifndef and simplify container driver

On Friday, February 08, 2013 12:19:35 PM Yasuaki Ishimatsu wrote:
> Hi Rafael,
> 
> 2013/02/08 9:24, Rafael J. Wysocki wrote:
> > On Monday, February 04, 2013 12:47:31 AM Rafael J. Wysocki wrote:
> >> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> >>
> >> The only useful thing that the ACPI container driver does is to
> >> install system notify handlers for all container and module device
> >> objects it finds in the namespace.  The driver structure,
> >> acpi_container_driver, and the data structures created by its
> >> .add() callback are in fact not used by the driver, so remove
> >> them entirely.
> >>
> >> It also makes a little sense to build that driver as a module,
> >> so make it non-modular and add its initialization to the
> >> namespace scanning code.
> >>
> >> In addition to that, make the namespace walk callback used for
> >> installing the notify handlers more straightforward.
> >
> > As pointed out by Toshi Kani, the above changes would make acpi_eject_store()
> > fail for containers and it is the only way to eject them currently, so patch
> > [2/2] is an improved version of this (with Toshi's changes folded in).
> >
> > Patch [1/2] is just a cleanup removing a useless #ifndef from acpi_eject_store().
> 
> I confimed the patch series works well.
> 
> Acked-by: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
> Tested-by: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>

Thanks a lot!

Rafael


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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