Messages in this thread | | | Date | Fri, 14 Nov 2014 08:26:58 +0100 | Subject | Re: [PATCH] PM / domains: Kconfig: always enable PM_RUNTIME when genpd enabled | From | Ulf Hansson <> |
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On 13 November 2014 23:28, Kevin Hilman <khilman@kernel.org> wrote: > From: Kevin Hilman <khilman@linaro.org> > > It makes little sense to use generic power domains without runtime PM. > Also, since the complexities of handling the !PM_RUNTIME case are > causing more trouble and confusion than they're worth, let's simplify > the world by making genpd always enable runtime PM.
I do agree that your above statement seems reasonable, even if can't really tell if that would break some SOCs use-cases.
My concern is though, that I fear we will be taking short-cuts in genpd that might bite us later on, but I might be wrong.
The reason for my concern is that on every other place, like in the subsystem level, driver core, PM core and of course in drivers - we need to cope with all the combinations of CONFIG_PM_SLEEP and CONFIG_PM_SLEEP. So theoretically, why shouldn't genpd be able to do that as well?
> > Cc: Ulf Hansson <ulf.hansson@linaro.org> > Cc: Geert Uytterhoeven <geert+renesas@glider.be> > Cc: Grygorii Strashko <grygorii.strashko@ti.com> > Signed-off-by: Kevin Hilman <khilman@linaro.org> > --- > kernel/power/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig > index 3d39cc0228e9..2a8c64d0a43c 100644 > --- a/kernel/power/Kconfig > +++ b/kernel/power/Kconfig > @@ -271,7 +271,7 @@ config PM_CLK > > config PM_GENERIC_DOMAINS > bool > - depends on PM > + select PM_RUNTIME
Shouldn't we actually depend on PM_RUNTIME instead?
> > config WQ_POWER_EFFICIENT_DEFAULT > bool "Enable workqueue power-efficient mode by default" > -- > 2.1.3 >
Kind regards Uffe
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