From: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
To: "Reizer, Eyal" <eyalr-l0cyMroinI0@public.gmane.org>
Cc: "Strashko,
Grygorii" <grygorii.strashko-l0cyMroinI0@public.gmane.org>,
Kalle Valo <kvalo-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
KISHON VIJAY ABRAHAM <kishon-l0cyMroinI0@public.gmane.org>,
"Mishol, Guy" <guym-l0cyMroinI0@public.gmane.org>,
Luca Coelho
<luciano.coelho-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
"Hahn, Maital" <maitalm-l0cyMroinI0@public.gmane.org>,
"Altshul, Maxim" <maxim.altshul-l0cyMroinI0@public.gmane.org>,
"linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Eyal Reizer <eyalreizer-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: [RFT 6/6] wlcore: Use generic runtime pm calls for wowlan elp configuration
Date: Wed, 30 May 2018 14:44:11 -0700 [thread overview]
Message-ID: <20180530214411.GI5705@atomide.com> (raw)
In-Reply-To: <63ad2f07fac941b88408352f6ddbce50-l0cyMroinI0@public.gmane.org>
* Reizer, Eyal <eyalr-l0cyMroinI0@public.gmane.org> [180530 06:37]:
> > > >
> > > > With runtime PM enabled, we can now use generic calls to
> > > > pm_generic_runtime_suspend and pm_generic_runtime_resume for
> > enabling elp
> > > > during suspend when wowlan is enabled and waking the chip from elp
> > > > on resume.
> > >
> > > Sry, but not sure you can :(
> > >
> > > These functions are not used by drivers directly because system suspend
> > > are not synchronized with PM runtime, so if you call
> > pm_generic_runtime_suspend()
> > > and, at the same time, there is pm_runtime_get_() in progress --> race ...
> > >
> > > The pm_runtime_force_() APIs have to be used, or
> > > PM runtime drivers functions can be called directly, but only if it possible to
> > be
> > > sure no other PM runtime calls active which is usually true at
> > suspend_noirq stage.
> >
> > Oh right, those are subsystem calls. Seems like
> > pm_runtime_force_suspend/resume() should work here,
> > Eyal?
> >
>
> Oh, nice, wasn't aware of the pm_runtime_force_() calls.
> For some reason they are not documented in:
> https://www.kernel.org/doc/Documentation/power/runtime_pm.txt
> Perhaps they should be?
Sure why not submit a patch for that.
> Anyway I have tried them instead of pm_generic_runtime_() and they seem
> To work fine on my platform.
> Will test some more and submit a v2.
OK I'll your pick v2 into my series.
Regards,
Tony
WARNING: multiple messages have this Message-ID (diff)
From: Tony Lindgren <tony@atomide.com>
To: "Reizer, Eyal" <eyalr@ti.com>
Cc: "Strashko, Grygorii" <grygorii.strashko@ti.com>,
Kalle Valo <kvalo@codeaurora.org>,
KISHON VIJAY ABRAHAM <kishon@ti.com>, "Mishol, Guy" <guym@ti.com>,
Luca Coelho <luciano.coelho@intel.com>,
"Hahn, Maital" <maitalm@ti.com>,
"Altshul, Maxim" <maxim.altshul@ti.com>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
Eyal Reizer <eyalreizer@gmail.com>
Subject: Re: [RFT 6/6] wlcore: Use generic runtime pm calls for wowlan elp configuration
Date: Wed, 30 May 2018 14:44:11 -0700 [thread overview]
Message-ID: <20180530214411.GI5705@atomide.com> (raw)
In-Reply-To: <63ad2f07fac941b88408352f6ddbce50@ti.com>
* Reizer, Eyal <eyalr@ti.com> [180530 06:37]:
> > > >
> > > > With runtime PM enabled, we can now use generic calls to
> > > > pm_generic_runtime_suspend and pm_generic_runtime_resume for
> > enabling elp
> > > > during suspend when wowlan is enabled and waking the chip from elp
> > > > on resume.
> > >
> > > Sry, but not sure you can :(
> > >
> > > These functions are not used by drivers directly because system suspend
> > > are not synchronized with PM runtime, so if you call
> > pm_generic_runtime_suspend()
> > > and, at the same time, there is pm_runtime_get_() in progress --> race ...
> > >
> > > The pm_runtime_force_() APIs have to be used, or
> > > PM runtime drivers functions can be called directly, but only if it possible to
> > be
> > > sure no other PM runtime calls active which is usually true at
> > suspend_noirq stage.
> >
> > Oh right, those are subsystem calls. Seems like
> > pm_runtime_force_suspend/resume() should work here,
> > Eyal?
> >
>
> Oh, nice, wasn't aware of the pm_runtime_force_() calls.
> For some reason they are not documented in:
> https://www.kernel.org/doc/Documentation/power/runtime_pm.txt
> Perhaps they should be?
Sure why not submit a patch for that.
> Anyway I have tried them instead of pm_generic_runtime_() and they seem
> To work fine on my platform.
> Will test some more and submit a v2.
OK I'll your pick v2 into my series.
Regards,
Tony
next prev parent reply other threads:[~2018-05-30 21:44 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-30 6:34 [RFT 6/6] wlcore: Use generic runtime pm calls for wowlan elp configuration Reizer, Eyal
2018-05-30 6:34 ` Reizer, Eyal
[not found] ` <63ad2f07fac941b88408352f6ddbce50-l0cyMroinI0@public.gmane.org>
2018-05-30 21:44 ` Tony Lindgren [this message]
2018-05-30 21:44 ` Tony Lindgren
-- strict thread matches above, loose matches on Subject: below --
2018-05-29 18:05 [RFTv3 0/6] Runtime PM support for wlcore Tony Lindgren
[not found] ` <20180529180605.73622-1-tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2018-05-29 18:06 ` [RFT 6/6] wlcore: Use generic runtime pm calls for wowlan elp configuration Tony Lindgren
2018-05-29 18:06 ` Tony Lindgren
[not found] ` <20180529180605.73622-7-tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2018-05-29 19:23 ` Grygorii Strashko
2018-05-29 19:23 ` Grygorii Strashko
[not found] ` <75fb865b-dc84-2e7d-d879-581e65dc343d-l0cyMroinI0@public.gmane.org>
2018-05-29 21:40 ` Tony Lindgren
2018-05-29 21:40 ` Tony Lindgren
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