linux-kernel - Re: [PATCH v4 05/18] ARM64 / ACPI: Introduce sleep-arm.c

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Message-ID: <20140917013114.GB31214@srcf.ucam.org>
Date:	Wed, 17 Sep 2014 02:31:14 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Catalin Marinas <catalin.marinas@....com>
Cc:	Graeme Gregory <gg@...mlogic.co.uk>,
	Mark Rutland <Mark.Rutland@....com>,
	"linaro-acpi@...ts.linaro.org" <linaro-acpi@...ts.linaro.org>,
	Will Deacon <Will.Deacon@....com>,
	Lv Zheng <lv.zheng@...el.com>, Rob Herring <robh@...nel.org>,
	Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Robert Moore <robert.moore@...el.com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	Liviu Dudau <Liviu.Dudau@....com>,
	Charles Garcia-Tobin <Charles.Garcia-Tobin@....com>,
	Robert Richter <rric@...nel.org>,
	Jason Cooper <jason@...edaemon.net>,
	Arnd Bergmann <arnd@...db.de>,
	Marc Zyngier <Marc.Zyngier@....com>,
	"jcm@...hat.com" <jcm@...hat.com>,
	Tomasz Nowicki <tomasz.nowicki@...aro.org>,
	Mark Brown <broonie@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"graeme.gregory@...aro.org" <graeme.gregory@...aro.org>,
	Randy Dunlap <rdunlap@...radead.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"hanjun.guo@...aro.org" <hanjun.guo@...aro.org>,
	Sudeep Holla <Sudeep.Holla@....com>,
	Olof Johansson <olof@...om.net>
Subject: Re: [PATCH v4 05/18] ARM64 / ACPI: Introduce sleep-arm.c

On Fri, Sep 12, 2014 at 04:49:03PM +0100, Catalin Marinas wrote:

> Now, for x86, do we need acpi_sleep_init() when CONFIG_ACPI_SLEEP is
> off? If not, we could simply add a dummy acpi_sleep_init() function when
> !ACPI_SLEEP and don't enable the config option for arm64.

The !ACPI_SLEEP case still uses the ACPI code for powering the system 
down. I'd recommend adding a new CONFIG_ACPI_POWER_OFF option, wrapping 
the remaining code in sleep.c and disabling that on ARM.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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