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

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Message-ID: <51146EC7.5090504@jp.fujitsu.com>
Date:	Fri, 8 Feb 2013 12:19:35 +0900
From:	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
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

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,
Yasuaki Ishimatsu

>
> Thanks,
> Rafael
>
>


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