From: Ohad Ben-Cohen <ohad@wizery.com>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: linux-pm@lists.linux-foundation.org,
Kevin Hilman <khilman@ti.com>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
Alan Stern <stern@rowland.harvard.edu>
Subject: Re: [linux-pm] runtime PM usage_count during driver_probe_device()?
Date: Fri, 1 Jul 2011 08:57:40 +0300 [thread overview]
Message-ID: <BANLkTikLna-jbrNfD2fz_QC1BfrCHpByNA@mail.gmail.com> (raw)
In-Reply-To: <201107010233.12377.rjw@sisk.pl>
On Fri, Jul 1, 2011 at 3:33 AM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> In theory it is possible that a subsystem (e.g. bus type) will enable
> runtime PM for devices without drivers and will (for example) put them
> into low power states until the drivers are loaded. Then, it makes
> sense for the core to prevent such transitions from racing with .probe().
>
> I'm not sure if this happens in practice, though,
Yeah, this is exactly what the SDIO subsystem is doing.
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next prev parent reply other threads:[~2011-07-01 5:58 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-30 22:19 runtime PM usage_count during driver_probe_device()? Kevin Hilman
2011-07-01 0:09 ` Kevin Hilman
2011-07-01 0:09 ` Kevin Hilman
2011-07-01 0:33 ` Rafael J. Wysocki
2011-07-01 0:33 ` [linux-pm] " Rafael J. Wysocki
2011-07-01 5:57 ` Ohad Ben-Cohen [this message]
2011-07-01 14:46 ` Kevin Hilman
2011-07-01 14:46 ` Kevin Hilman
2011-07-01 5:57 ` Ohad Ben-Cohen
2011-07-01 11:32 ` Ming Lei
2011-07-01 11:32 ` [linux-pm] " Ming Lei
2011-07-01 14:54 ` Alan Stern
2011-07-01 21:13 ` [PATCH] PM: prevent runtime_resume from racing with probe Alan Stern
2011-07-01 21:42 ` Rafael J. Wysocki
2011-07-01 14:54 ` runtime PM usage_count during driver_probe_device()? Alan Stern
2011-07-01 14:43 ` [linux-pm] " Alan Stern
2011-07-01 14:43 ` Alan Stern
2011-07-01 14:44 ` Kevin Hilman
2011-07-01 15:25 ` Alan Stern
2011-07-01 15:25 ` [linux-pm] " Alan Stern
2011-07-01 15:45 ` Kevin Hilman
2011-07-01 15:59 ` Alan Stern
2011-07-01 16:54 ` Kevin Hilman
2011-07-01 16:54 ` Kevin Hilman
2011-07-01 15:59 ` Alan Stern
2011-07-01 20:53 ` Rafael J. Wysocki
2011-07-01 20:53 ` [linux-pm] " Rafael J. Wysocki
2011-07-01 21:12 ` Alan Stern
2011-07-01 21:44 ` Rafael J. Wysocki
2011-07-01 21:44 ` [linux-pm] " Rafael J. Wysocki
2011-07-01 22:12 ` [PATCH] PM / Runtime: Update documentation regarding driver removal Rafael J. Wysocki
2011-07-01 22:49 ` Kevin Hilman
2011-07-01 22:49 ` Kevin Hilman
2011-07-01 22:12 ` Rafael J. Wysocki
2011-07-01 21:12 ` runtime PM usage_count during driver_probe_device()? Alan Stern
2011-07-01 15:45 ` Kevin Hilman
2011-07-01 14:44 ` Kevin Hilman
2011-07-01 21:42 ` Rafael J. Wysocki
2011-07-01 21:42 ` [linux-pm] " Rafael J. Wysocki
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