From: Ohad Ben-Cohen <ohad@wizery.com>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Alan Stern <stern@rowland.harvard.edu>,
linux-pm@lists.linux-foundation.org,
Johannes Berg <johannes@sipsolutions.net>,
linux-wireless@vger.kernel.org, linux-mmc@vger.kernel.org,
Ido Yariv <ido@wizery.com>,
Kevin Hilman <khilman@deeprootsystems.com>
Subject: Re: [linux-pm] subtle pm_runtime_put_sync race and sdio functions
Date: Tue, 28 Dec 2010 21:15:27 +0200 [thread overview]
Message-ID: <AANLkTinewad6YxXvn5gnJQ+HJn41Sg96319GQn9KRKWj@mail.gmail.com> (raw)
In-Reply-To: <201012261937.21256.rjw@sisk.pl>
On Sun, Dec 26, 2010 at 8:37 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> So, it only happens during asynchronous suspend? In other words, if suspend
> is synchronous, everything should be fine, right?
Not necessarily.
Consider this simple scenario, where a device was added after the mmc
host controller, but before mac80211. In this case its suspend handler
will have the chance to abort system suspend after mac80211 already
told our driver to power down the device (but the device wasn't
powered down yet, because the driver used pm_runtime_put_sync() which
is disabled).
Thanks,
Ohad.
next prev parent reply other threads:[~2010-12-28 19:15 UTC|newest]
Thread overview: 179+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-09 23:37 subtle pm_runtime_put_sync race and sdio functions Ohad Ben-Cohen
2010-12-10 0:00 ` Rafael J. Wysocki
2010-12-10 0:00 ` [linux-pm] " Rafael J. Wysocki
2010-12-10 17:24 ` Alan Stern
2010-12-10 17:24 ` [linux-pm] " Alan Stern
2010-12-10 22:01 ` Rafael J. Wysocki
2010-12-10 22:01 ` [linux-pm] " Rafael J. Wysocki
2010-12-10 23:02 ` Ohad Ben-Cohen
2010-12-10 23:02 ` [linux-pm] " Ohad Ben-Cohen
2010-12-10 22:59 ` Ohad Ben-Cohen
2010-12-10 22:59 ` [linux-pm] " Ohad Ben-Cohen
2010-12-11 1:17 ` Ohad Ben-Cohen
2010-12-11 14:53 ` Alan Stern
2010-12-11 1:17 ` Ohad Ben-Cohen
2010-12-11 14:50 ` Alan Stern
2010-12-18 13:29 ` Ohad Ben-Cohen
2010-12-18 13:29 ` [linux-pm] " Ohad Ben-Cohen
2010-12-18 14:16 ` David Vrabel
2010-12-18 15:12 ` Ohad Ben-Cohen
2010-12-18 15:12 ` Ohad Ben-Cohen
2010-12-18 14:16 ` David Vrabel
2010-12-18 15:07 ` [linux-pm] " Rafael J. Wysocki
2010-12-18 16:00 ` Ohad Ben-Cohen
2010-12-18 16:00 ` [linux-pm] " Ohad Ben-Cohen
2010-12-18 16:40 ` Johannes Berg
2010-12-18 19:08 ` Ohad Ben-Cohen
2010-12-18 19:08 ` Ohad Ben-Cohen
2010-12-18 21:30 ` Alan Stern
2010-12-18 21:30 ` Alan Stern
2010-12-18 22:57 ` Rafael J. Wysocki
2010-12-18 22:57 ` [linux-pm] " Rafael J. Wysocki
2010-12-18 21:30 ` Alan Stern
2010-12-18 22:52 ` Rafael J. Wysocki
2010-12-18 22:52 ` [linux-pm] " Rafael J. Wysocki
2010-12-18 19:08 ` Ohad Ben-Cohen
2010-12-18 21:29 ` [linux-pm] " Alan Stern
2010-12-18 21:29 ` Alan Stern
2010-12-18 21:29 ` Alan Stern
2010-12-18 22:50 ` Rafael J. Wysocki
2010-12-18 22:50 ` [linux-pm] " Rafael J. Wysocki
2010-12-18 16:40 ` Johannes Berg
2010-12-18 22:47 ` [linux-pm] " Rafael J. Wysocki
2010-12-18 22:47 ` Rafael J. Wysocki
2010-12-19 7:48 ` Ohad Ben-Cohen
2010-12-19 7:48 ` Ohad Ben-Cohen
2010-12-19 7:48 ` Ohad Ben-Cohen
2010-12-19 10:22 ` Rafael J. Wysocki
2010-12-19 10:22 ` [linux-pm] " Rafael J. Wysocki
2010-12-20 3:37 ` Alan Stern
2010-12-20 3:37 ` Alan Stern
2010-12-20 21:17 ` Rafael J. Wysocki
2010-12-21 0:57 ` Alan Stern
2010-12-21 0:57 ` Alan Stern
2010-12-21 21:31 ` Rafael J. Wysocki
2010-12-22 1:42 ` Alan Stern
2010-12-22 1:42 ` Alan Stern
2010-12-22 12:29 ` Rafael J. Wysocki
2010-12-22 12:29 ` Rafael J. Wysocki
2011-01-26 23:28 ` Kevin Hilman
2011-01-26 23:28 ` Kevin Hilman
2011-01-27 18:13 ` Alan Stern
2011-01-27 18:13 ` [linux-pm] " Alan Stern
2011-01-27 18:13 ` Alan Stern
2011-01-27 19:22 ` Kevin Hilman
2011-01-27 19:22 ` [linux-pm] " Kevin Hilman
2011-01-27 19:22 ` Kevin Hilman
2011-01-27 19:49 ` Alan Stern
2011-01-27 19:49 ` [linux-pm] " Alan Stern
2011-01-27 19:49 ` Alan Stern
2011-01-27 20:15 ` Kevin Hilman
2011-01-27 20:15 ` [linux-pm] " Kevin Hilman
2011-01-27 20:15 ` Kevin Hilman
2011-01-27 22:18 ` Vitaly Wool
2011-01-27 22:18 ` Vitaly Wool
2011-01-27 22:18 ` Vitaly Wool
2011-01-27 23:21 ` Rafael J. Wysocki
2011-01-27 23:21 ` [linux-pm] " Rafael J. Wysocki
2011-01-27 23:49 ` Kevin Hilman
2011-01-27 23:49 ` [linux-pm] " Kevin Hilman
2011-01-27 23:11 ` Rafael J. Wysocki
2011-01-27 23:11 ` [linux-pm] " Rafael J. Wysocki
2011-01-27 18:20 ` Vitaly Wool
2011-01-27 18:20 ` [linux-pm] " Vitaly Wool
2011-01-27 18:20 ` Vitaly Wool
2011-01-27 18:54 ` Kevin Hilman
2011-01-27 18:54 ` [linux-pm] " Kevin Hilman
2010-12-22 12:29 ` Rafael J. Wysocki
2010-12-22 1:42 ` Alan Stern
2010-12-21 21:31 ` Rafael J. Wysocki
2010-12-21 0:57 ` Alan Stern
2010-12-20 21:17 ` Rafael J. Wysocki
2010-12-20 3:37 ` Alan Stern
2010-12-21 22:23 ` Kevin Hilman
2010-12-21 22:23 ` [linux-pm] " Kevin Hilman
2010-12-22 1:48 ` Alan Stern
2010-12-22 1:48 ` Alan Stern
2010-12-22 1:48 ` Alan Stern
2010-12-23 7:51 ` Ohad Ben-Cohen
2010-12-23 7:51 ` [linux-pm] " Ohad Ben-Cohen
2010-12-23 16:03 ` Alan Stern
2010-12-23 16:03 ` [linux-pm] " Alan Stern
2010-12-23 16:03 ` Alan Stern
2010-12-25 7:34 ` Ohad Ben-Cohen
2010-12-25 7:34 ` Ohad Ben-Cohen
2010-12-25 16:21 ` Alan Stern
2010-12-25 16:21 ` Alan Stern
2010-12-25 20:58 ` Ohad Ben-Cohen
2010-12-25 20:58 ` [linux-pm] " Ohad Ben-Cohen
2010-12-25 20:58 ` Ohad Ben-Cohen
2010-12-25 21:50 ` Vitaly Wool
2010-12-25 21:50 ` [linux-pm] " Vitaly Wool
2010-12-26 5:27 ` Ohad Ben-Cohen
2010-12-26 5:27 ` [linux-pm] " Ohad Ben-Cohen
2010-12-25 21:54 ` Vitaly Wool
2010-12-25 21:54 ` Vitaly Wool
2010-12-25 21:54 ` Vitaly Wool
2010-12-26 2:48 ` [linux-pm] " Alan Stern
2010-12-26 2:48 ` Alan Stern
2010-12-26 5:55 ` Ohad Ben-Cohen
2010-12-26 5:55 ` [linux-pm] " Ohad Ben-Cohen
2010-12-26 5:55 ` Ohad Ben-Cohen
2010-12-26 11:45 ` Rafael J. Wysocki
2010-12-26 12:43 ` Ohad Ben-Cohen
2010-12-26 12:43 ` [linux-pm] " Ohad Ben-Cohen
2010-12-26 12:43 ` Ohad Ben-Cohen
2010-12-26 18:35 ` Rafael J. Wysocki
2010-12-28 19:11 ` Ohad Ben-Cohen
2010-12-28 19:11 ` [linux-pm] " Ohad Ben-Cohen
2010-12-28 19:21 ` Rafael J. Wysocki
2010-12-28 19:21 ` [linux-pm] " Rafael J. Wysocki
2010-12-28 19:21 ` Rafael J. Wysocki
2010-12-28 19:34 ` Ohad Ben-Cohen
2010-12-28 20:36 ` Rafael J. Wysocki
2010-12-28 20:36 ` [linux-pm] " Rafael J. Wysocki
2010-12-28 19:34 ` Ohad Ben-Cohen
2010-12-26 18:35 ` Rafael J. Wysocki
2010-12-26 14:53 ` [linux-pm] " Ohad Ben-Cohen
2010-12-26 18:37 ` Rafael J. Wysocki
2010-12-26 18:37 ` [linux-pm] " Rafael J. Wysocki
2010-12-28 19:15 ` Ohad Ben-Cohen [this message]
2010-12-28 20:04 ` Rafael J. Wysocki
2010-12-28 20:04 ` [linux-pm] " Rafael J. Wysocki
2010-12-28 20:04 ` Rafael J. Wysocki
2010-12-28 20:41 ` Ohad Ben-Cohen
2010-12-28 20:41 ` [linux-pm] " Ohad Ben-Cohen
2010-12-28 20:41 ` Ohad Ben-Cohen
2010-12-28 19:15 ` Ohad Ben-Cohen
2010-12-26 14:53 ` Ohad Ben-Cohen
2010-12-26 11:45 ` Rafael J. Wysocki
2010-12-26 17:00 ` [linux-pm] " Alan Stern
2010-12-26 17:00 ` Alan Stern
2010-12-28 19:04 ` Ohad Ben-Cohen
2010-12-28 19:04 ` [linux-pm] " Ohad Ben-Cohen
2010-12-28 19:04 ` Ohad Ben-Cohen
2010-12-28 21:46 ` Alan Stern
2010-12-28 21:46 ` [linux-pm] " Alan Stern
2010-12-28 21:46 ` Alan Stern
2010-12-29 6:34 ` Ohad Ben-Cohen
2010-12-30 4:25 ` Alan Stern
2010-12-30 4:25 ` Alan Stern
2010-12-30 4:25 ` Alan Stern
2010-12-29 6:34 ` Ohad Ben-Cohen
2010-12-29 8:01 ` Ohad Ben-Cohen
2010-12-29 8:01 ` [linux-pm] " Ohad Ben-Cohen
2010-12-30 4:30 ` Alan Stern
2010-12-30 4:30 ` [linux-pm] " Alan Stern
2010-12-30 4:30 ` Alan Stern
2010-12-26 17:00 ` Alan Stern
2010-12-26 2:48 ` Alan Stern
2010-12-25 16:21 ` Alan Stern
2010-12-25 7:34 ` Ohad Ben-Cohen
2010-12-18 22:47 ` Rafael J. Wysocki
2010-12-18 15:07 ` Rafael J. Wysocki
2010-12-18 21:20 ` [linux-pm] " Alan Stern
2010-12-18 23:03 ` Rafael J. Wysocki
2010-12-18 23:03 ` Rafael J. Wysocki
2010-12-19 10:00 ` [linux-pm] " Ohad Ben-Cohen
2010-12-19 10:00 ` Ohad Ben-Cohen
2010-12-18 21:20 ` Alan Stern
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