linux-kernel - Re: [PATCH 1/4] PM: Drop the SET_PM_RUNTIME_PM

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Date:	Thu, 4 Dec 2014 11:04:20 +0100
From:	Ulf Hansson <ulf.hansson@...aro.org>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	Linux PM list <linux-pm@...r.kernel.org>,
	Linux PCI <linux-pci@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Kevin Hilman <khilman@...nel.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [PATCH 1/4] PM: Drop the SET_PM_RUNTIME_PM_OPS() macro

On 3 December 2014 at 23:51, Rafael J. Wysocki <rjw@...ysocki.net> wrote:
> On Wednesday, December 03, 2014 03:15:49 PM Ulf Hansson wrote:
>> On 27 November 2014 at 01:38, Rafael J. Wysocki <rjw@...ysocki.net> wrote:
>> > From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>> >
>> > The SET_PM_RUNTIME_PM_OPS() and SET_RUNTIME_PM_OPS() macros are
>> > identical except that one of them is not empty for CONFIG_PM set,
>> > while the other one is not empty for CONFIG_PM_RUNTIME set,
>> > respectively.
>> >
>> > However, after commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if
>> > PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so one
>> > of these macros is now redundant.
>> >
>> > For this reason, drop SET_PM_RUNTIME_PM_OPS() and replace it with
>> > SET_RUNTIME_PM_OPS() everywhere.
>>
>> Hi Rafael,
>>
>> Apparently, I have queued an mmc patch in my mmc tree, which means one
>> mmc driver starts using the SET_PM_RUNTIME_PM_OPS macro. It should
>> cause a build error in linux-next with @subject patch.
>>
>> I have shared that patch through an immutable branch, I have also
>> checked potential conflicts and it shouldn't be any problems to pull
>> that in to your tree. Then you can fix $subject patch by also
>> converting the mmc driver to use SET_RUNTIME_PM_OPS macro.
>>
>> The branch is available at:
>> git://git.linaro.org/people/ulf.hansson/mmc.git mmc_for_linux_pm
>
> Thanks for letting me know!
>
> What about adding the following line to the $subject patch instead:
>
> #define SET_PM_RUNTIME_PM_OPS   SET_RUNTIME_PM_OPS
>
> and fixing things up when all has been merged?

That's an option.

On the other hand we will have a window of new users of
SET_PM_RUNTIME_PM_OPS, during the next release cycle. Or are you
saying that we should send fixes for the rc which takes care of the
removal of it?

Kind regards
Uffe

>
>
> --
> I speak only for myself.
> Rafael J. Wysocki, Intel Open Source Technology Center.
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