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From: Alan Stern <stern@rowland.harvard.edu>
To: Colin Cross <ccross@android.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>, <linux-kernel@vger.kernel.org>,
	<linux-pm@lists.linux-foundation.org>,
	Pavel Machek <pavel@ucw.cz>, Len Brown <len.brown@intel.com>,
	Greg Kroah-Hartman <gregkh@suse.de>,
	Randy Dunlap <randy.dunlap@oracle.com>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] PM: Prevent waiting forever on asynchronous resume after abort
Date: Thu, 2 Sep 2010 16:45:25 -0400 (EDT)	[thread overview]
Message-ID: <Pine.LNX.4.44L0.1009021642320.1311-100000@iolanthe.rowland.org> (raw)
In-Reply-To: <AANLkTi=s3_kFvRY9Afzku82gUgW7YKYXDBZvTkxQsMP8@mail.gmail.com>

On Thu, 2 Sep 2010, Colin Cross wrote:

> >> I think it would be better to change device_pm_init() and add a
> >> complete_all().
> >
> > I agree.
> That would work, and was my first solution, but it increases the
> reliance on the completion variable being left completed between state
> transitions, which is undocumented and unnecessary.  It seems more
> straightforward to me to only wait on the parent if the parent is
> suspended.

How about calling complete_all() from within dpm_prepare() as well?  
Then it will get initialized properly at the beginning of every sleep 
transition.

Alan Stern


  parent reply	other threads:[~2010-09-02 20:45 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-02  2:54 [PATCH] PM: Prevent waiting forever on asynchronous resume after abort Colin Cross
2010-09-02 13:50 ` Alan Stern
2010-09-02 13:50 ` Alan Stern
2010-09-02 19:46   ` Rafael J. Wysocki
2010-09-02 19:46   ` Rafael J. Wysocki
2010-09-02 20:24     ` Colin Cross
2010-09-02 20:30       ` Rafael J. Wysocki
2010-09-02 20:30       ` Rafael J. Wysocki
2010-09-02 20:45       ` Alan Stern
2010-09-02 20:45       ` Alan Stern [this message]
2010-09-02 21:01         ` Colin Cross
2010-09-02 21:01         ` Colin Cross
2010-09-02 21:06           ` Rafael J. Wysocki
2010-09-02 21:06             ` Rafael J. Wysocki
2010-09-02 21:34           ` Alan Stern
2010-09-02 22:45             ` Colin Cross
2010-09-02 23:09               ` Rafael J. Wysocki
2010-09-03  0:14                 ` Colin Cross
2010-09-03  0:14                 ` Colin Cross
2010-09-03  0:35                   ` Rafael J. Wysocki
2010-09-03  0:35                   ` Rafael J. Wysocki
2010-09-03  1:54                     ` Colin Cross
2010-09-03  1:54                     ` Colin Cross
2010-09-03  2:42                       ` Alan Stern
2010-09-03  4:30                         ` Colin Cross
2010-09-03 14:04                           ` Alan Stern
2010-09-03 16:48                             ` Colin Cross
2010-09-03 17:31                               ` Alan Stern
2010-09-03 17:31                               ` Alan Stern
2010-09-16 20:36                                 ` [PATCH] PM: Fix potential issue with failing asynchronous suspend (was: Re: [PATCH] PM: Prevent waiting ...) Rafael J. Wysocki
2010-09-16 20:36                                 ` Rafael J. Wysocki
2010-09-16 21:00                                   ` Alan Stern
2010-09-16 21:24                                     ` Rafael J. Wysocki
2010-09-16 21:24                                     ` Rafael J. Wysocki
2010-09-16 21:00                                   ` Alan Stern
2010-09-03 16:48                             ` [PATCH] PM: Prevent waiting forever on asynchronous resume after abort Colin Cross
2010-09-03 14:04                           ` Alan Stern
2010-09-03  4:30                         ` Colin Cross
2010-09-03  2:42                       ` Alan Stern
2010-09-02 23:09               ` Rafael J. Wysocki
2010-09-02 22:45             ` Colin Cross
2010-09-02 21:34           ` Alan Stern
2010-09-02 21:05       ` Rafael J. Wysocki
2010-09-02 21:05         ` Rafael J. Wysocki
2010-09-02 21:31         ` Colin Cross
2010-09-02 21:40           ` Rafael J. Wysocki
2010-09-02 22:59             ` [PATCH v2] " Colin Cross
2010-09-02 23:25               ` Rafael J. Wysocki
2010-09-02 23:25                 ` Rafael J. Wysocki
2010-09-02 22:59             ` Colin Cross
2010-09-02 21:40           ` [PATCH] " Rafael J. Wysocki
2010-09-02 21:31         ` Colin Cross
2010-09-02 20:24     ` Colin Cross
2010-09-02 20:27     ` Alan Stern
2010-09-02 20:27     ` Alan Stern
  -- strict thread matches above, loose matches on Subject: below --
2010-09-02  2:54 Colin Cross

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