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

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Message-ID: <108805117.sS9iL5zouT@diego>
Date:	Mon, 27 Oct 2014 18:05:35 +0100
From:	Heiko Stübner <heiko@...ech.de>
To:	balbi@...com
Cc:	Johan Hovold <johan@...nel.org>,
	Romain Perier <romain.perier@...il.com>,
	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,
	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"

Am Montag, 27. Oktober 2014, 11:47:41 schrieb Felipe Balbi:
> On Mon, Oct 27, 2014 at 05:41:03PM +0100, Johan Hovold wrote:
> > 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.
> 
> oh, so poweroff-source isn't in Linus' tree yet ? (/me goes grep)
> 
> Then it should be fine. My bad.
> 
> Many of the other comments are still valid because even though
> poweroff-source isn't in mainline yet, this series still creates
> bisection points which are broken. The best solution would be to drop
> all those patches from Mark's tree. Read, not revert, drop.

There have never been any users of the poweroff-source. The act8846 in the 
radxarock would have been the first, but I held off with the dts patch as the 
naming issue came up at the same time.

So I guess if Romain keeps the renaming together there shouldn't be any other 
bad bisection points?
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