Re: [PATCH v4 1/2] of: Rename "poweroff-source" property to "system-power-controller"

From: Romain Perier
Date: Fri Nov 21 2014 - 08:18:27 EST

2014-11-21 11:59 GMT+01:00 Johan Hovold <johan@xxxxxxxxxx>:
> On Thu, Nov 13, 2014 at 01:34:58PM +0000, Auto Configured wrote:
>> From: Romain Perier <romain.perier@xxxxxxxxx>
>> It reverts commit a4b4e0461ec5 ("of: Add standard property for poweroff capability").
>> As discussed on the mailing list, it makes more sense to rename back to the
>> old established property name, without the vendor prefix. 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
>> which was only used by tps65910 and the new one without vendor-prefix.
> Now this is a bit of a mess.
> There's a commit in the mfd tree, 25f833c1171d ("mfd: tps65910: Convert
> ti,system-power-controller DT property to poweroff-source"), which
> breaks all dts using tps65910 since these are never updated to the now
> retracted property name ("poweroff-source").

No seriously ? yes, this is why I ask for feedbacks since 3 weeks... ^^

> This one should simply be reverted ASAP.
>> Signed-off-by: Romain Perier <romain.perier@xxxxxxxxx>
>> ---
>> .../bindings/power/{poweroff.txt => power-controller.txt} | 0
>> .../devicetree/bindings/regulator/act8865-regulator.txt | 4 ++--
>> drivers/mfd/tps65910.c | 9 ++++++++-
>> drivers/regulator/act8865-regulator.c | 2 +-
>> include/linux/of.h | 6 +++---
>> 5 files changed, 14 insertions(+), 7 deletions(-)
> Romain, what tree is this patch against? The changes to the tps65910
> driver appears not to even be in the regulator tree, yet you asked Mark
> to merge this. And the MFD maintainer is not even on CC.

I work with linux-next, this patch is present in that tree. If I
remember correctly, it was merged by Lee Jones (so it was merged onto
the mfd tree)

> Let's fix the breakage by reverting the offending commit in mfd. Then the
> new standard name can be introduced in regulator alone (e.g. this patch
> without the tps65910 bits) as nothing outside of regulator should be
> using the new power-off feature (or binding) for act8865. Then other
> drivers and dts can be converted to use the new property name (while
> retaining backwards compatibility) for 3.20.
> [ We should probably also consider adding an "of_device_is_" prefix to
> the helper name for consistency. ]
> Johan

Maintainers, Mark, Grant, Lee, what do you think ?

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