linux-kernel - Re: [PATCH 01/44] kernel: Add support for poweroff handler call chain

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Date:	Thu, 18 Jun 2015 14:40:18 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Guenter Roeck <linux@...ck-us.net>
CC:	linux-kernel@...r.kernel.org, linux-m32r-ja@...linux-m32r.org,
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	"Rafael J. Wysocki" <rjw@...ysocki.net>,
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	Andrew Morton <akpm@...ux-foundation.org>,
	Romain Perier <romain.perier@...il.com>,
	linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 01/44] kernel: Add support for poweroff handler call chain

On 06/18/2015 08:30 AM, Guenter Roeck wrote:
> On Wed, Jun 17, 2015 at 06:04:54PM -0700, Stephen Boyd wrote:
> [ ... ]
>> What happened to this series? I want to add shutdown support to my
>> platform and I need to write a register on the PMIC in one driver to
>> configure it for shutdown instead of restart and then write an MMIO
>> register to tell the PMIC to actually do the shutdown in another driver.
>> It seems that the notifier solves this case for me, albeit with the
>> slight complication that I need to order the two with some priority.
>>
> Can you use the .shutdown driver callback instead ?
>
> I see other drivers use that, and check for system_state == SYSTEM_POWER_OFF
> to power off the hardware.
>

Yes I think that will work. I'll still have to hook pm_power_off() for
the mmio register, but I guess that's ok and I don't need to worry about
this series then.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

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