linux-kernel - Re: [PATCH v1 01/10] of: Rename "poweroff-source" property to "system-power-controller"

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Message-ID: <20141027164103.GD2006@localhost>
Date:	Mon, 27 Oct 2014 17:41:03 +0100
From:	Johan Hovold <johan@...nel.org>
To:	Felipe Balbi <balbi@...com>
Cc:	Romain Perier <romain.perier@...il.com>, heiko@...ech.de,
	devicetree@...r.kernel.org, broonie@...nel.org,
	lgirdwood@...il.com, linux-kernel@...r.kernel.org,
	grant.likely@...aro.org, robh@...nel.org, mark.rutland@....com,
	johan@...nel.org, linux-pm@...r.kernel.org, linux@...ck-us.net,
	lee.jones@...aro.org, robh+dt@...nel.org, pawel.moll@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	linux@....linux.org.uk, swarren@...dotorg.org,
	thierry.reding@...il.com, gnurou@...il.com,
	linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org
Subject: Re: [PATCH v1 01/10] of: Rename "poweroff-source" property to
 "system-power-controller"

On Mon, Oct 27, 2014 at 11:38:40AM -0500, Felipe Balbi wrote:
> On Mon, Oct 27, 2014 at 04:26:46PM +0000, Romain Perier wrote:
> > As discussed on the mailing list, it makes more sense to rename this property
> > to "system-power-controller". Problem being that the word "source" usually tends
> > to be used for inputs and that is out of control of the OS. The poweroff
> > capability is an output which simply turns the system-power off. Also, this
> > property might be used by drivers which power-off the system and power back on
> > subsequent RTC alarms. This seems to suggest to remove "poweroff" from the
> > property name and to choose "system-power-controller" as the more generic name.
> > This patchs adds the required renaming changes and defines an helper function
> > which is compatible with both properties, the old one prefixed by a vendor name
> > and the new one without any prefix.

> I think you still need to support poweroff-source since it has been
> released on a stable kernel. Perhaps add a warning message telling users
> it's deprecated and asking them to switch over to
> system-power-controller ? Still, simply removing it isn't very nice.

No, Romain sent a patch that replaced "<vendor>,system-power-controller"
with "poweroff-source". It's now in Mark's tree (for v3.19), and this
series "reverts" to the old name minus the vendor-prefix.

Johan
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