linux-kernel - Re: [PATCH 2/5] HSI: nokia-modem: kernel based PM

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Message-ID: <20160207213949.GC6147@amd>
Date:	Sun, 7 Feb 2016 22:39:49 +0100
From:	Pavel Machek <pavel@....cz>
To:	Sebastian Reichel <sre@...nel.org>
Cc:	Tony Lindgren <tony@...mide.com>,
	Benoît Cousson <bcousson@...libre.com>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Pali Rohár <pali.rohar@...il.com>,
	linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] HSI: nokia-modem: kernel based PM

On Sun 2016-01-31 19:00:09, Sebastian Reichel wrote:
> Hi,
> 
> On Sun, Jan 31, 2016 at 06:29:48PM +0100, Pavel Machek wrote:
> > > So far power management had to be done in uerspace using exported
> > 
> > "userspace"
> 
> Right, thanks.
> 
> > > This patch adds kernel based power management, which will bind the
> > > modem's power state to the state of the phonet network interface.
> > 
> > Ok, so I have ofonod that already does power management in
> > userspace. What happens when power management is done twice?
> 
> I have patches for ofono, which add support for the in-kernel
> power management. Currently ofono will not start with the new
> method, since it wants the GPIOs for userspace based PM.

Ok, but breaking userspace is a no-no, and stock ofono works well on
N900. So this should not go in as-is...?
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html