From: Rabin Vincent <rabin@rab.in>
To: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
Jean Delvare <khali@linux-fr.org>, Rajendra Nayak <rnayak@ti.com>,
Kevin Hilman <khilman@deeprootsystems.com>,
Vishwanath BS <vishwanath.bs@ti.com>,
Partha Basak <p-basak2@ti.com>,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-pm@lists.linux-foundation.org, linux-i2c@vger.kernel.org
Subject: Re: i2c runtime suspend and system wide suspend
Date: Thu, 30 Dec 2010 12:02:53 +0530 [thread overview]
Message-ID: <AANLkTinqqgNwgFCMVL-2T83zKnNLGLF007atJ4-EDEW5@mail.gmail.com> (raw)
In-Reply-To: <4D1C0CFE.5010008@codeaurora.org>
On Thu, Dec 30, 2010 at 10:09 AM, Abhijeet Dharmapurikar
<adharmap@codeaurora.org> wrote:
> The i2c-core driver mixes runtime suspend and system wide suspend, in that,
> during a system wide suspend, it skips calling ->suspend if the device is
> runtime suspended.
>
> I have an interrupt controller running over the i2c bus and that driver is
> oblivious of the runtime pm framework, IOW, it doesn't do any runtime pm
> calls. CONFIG_RUNTIME_PM is enabled however (for some other bus drivers).
> The issue I am facing is that all such i2c devices are assumed runtime
> suspended and the ->suspend for these devices is not invoked during
> systemwide suspend.
This was discussed on linux-pm recently. Rafael had a fix, I'm don't know
whether it's applied yet:
https://lists.linux-foundation.org/pipermail/linux-pm/2010-December/029567.html
https://lists.linux-foundation.org/pipermail/linux-pm/2010-December/029596.html
Also relevant:
https://lists.linux-foundation.org/pipermail/linux-pm/2010-December/029600.html
https://lists.linux-foundation.org/pipermail/linux-pm/2010-December/029658.html
next prev parent reply other threads:[~2010-12-30 6:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-30 4:39 i2c runtime suspend and system wide suspend Abhijeet Dharmapurikar
2010-12-30 6:32 ` Rabin Vincent [this message]
2010-12-30 10:49 ` Rafael J. Wysocki
2010-12-30 10:49 ` Rafael J. Wysocki
2010-12-30 11:35 ` Mark Brown
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