linux-kernel - Re: [PATCH 3/3][update] PM / sleep: Introduce command line argument for sleep state enumeration

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Message-ID: <1848200.GDD9x0Rptb@vostro.rjw.lan>
Date:	Tue, 10 Jun 2014 17:23:24 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Pavel Machek <pavel@....cz>
Cc:	Linux PM list <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3][update] PM / sleep: Introduce command line argument for sleep state enumeration

On Tuesday, June 10, 2014 03:12:06 PM Pavel Machek wrote:
> Hi!
> 
> > From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> > 
> > On some systems the platform doesn't support neither
> > PM_SUSPEND_MEM nor PM_SUSPEND_STANDBY, so PM_SUSPEND_FREEZE is the
> > only available system sleep state.  However, some user space frameworks
> > only use the "mem" and (sometimes) "standby" sleep state labels, so
> > the users of those systems need to modify user space in order to be
> > able to use system suspend at all and that is not always possible.
> 
> I'd say we should fix the frameworks, not add option to change kernel
> interfaces.
> 
> Because, as you mentioned, if we add this, we are probably going to
> get stuck with it forever :-(.

Unfortunately, fixing the frameworks is rather less than realistic in any
reasonable time frame, since  Android. :-)

Rafael

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