From: Matthew Garrett <mjg59@srcf.ucam.org>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: pm list <linux-pm@lists.linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Nigel Cunningham <nigel@nigel.suspend2.net>,
Pavel Machek <pavel@ucw.cz>,
Alan Stern <stern@rowland.harvard.edu>,
Oliver Neukum <oliver@neukum.org>
Subject: Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware before hibernation/suspend
Date: Sun, 27 May 2007 21:49:56 +0100 [thread overview]
Message-ID: <20070527204955.GA22202@srcf.ucam.org> (raw)
In-Reply-To: <200705272231.54535.rjw@sisk.pl>
On Sun, May 27, 2007 at 10:31:53PM +0200, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rjw@sisk.pl>
>
> Use a hibernation and suspend notifier to disable the firmware requesting
> mechanism before a hibernation/suspend and enable it after the operation.
This avoids the problem of .resume methods calling userspace while
userspace is frozen and a resulting hang, but does it actually result in
the drivers beginning to work again? If we remove process freezing in
STR, this should just work[1] without the need to complicate things. On
the other hand, if we don't want to support these functions in the
suspend and resume methods we could just audit the kernel and remove
them all.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2007-05-27 20:50 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-27 20:29 [RFC][PATCH -mm 0/3] PM: Hibernation and suspend notifiers Rafael J. Wysocki
2007-05-27 20:30 ` [RFC][PATCH -mm 1/3] " Rafael J. Wysocki
2007-05-28 9:49 ` Nigel Cunningham
2007-05-28 13:12 ` Pavel Machek
2007-05-28 17:26 ` Rafael J. Wysocki
2007-05-28 15:56 ` Alan Stern
2007-05-28 17:29 ` Rafael J. Wysocki
2007-05-29 22:24 ` Rafael J. Wysocki
2007-05-30 15:37 ` Pavel Machek
2007-05-30 20:44 ` Rafael J. Wysocki
2007-05-30 21:11 ` Rafael J. Wysocki
2007-05-30 22:24 ` Nigel Cunningham
2007-05-31 5:44 ` Rafael J. Wysocki
2007-05-31 14:23 ` Pavel Machek
2007-05-31 20:02 ` Rafael J. Wysocki
2007-05-31 21:56 ` Nigel Cunningham
2007-05-30 22:29 ` Pavel Machek
2007-05-31 5:42 ` Rafael J. Wysocki
2007-05-27 20:30 ` [RFC][PATCH -mm 2/3] PM: Disable usermode helper before hibernation/suspend Rafael J. Wysocki
2007-05-28 13:04 ` Pavel Machek
2007-05-27 20:31 ` [RFC][PATCH -mm 3/3] PM: Disable _request_firmware " Rafael J. Wysocki
2007-05-27 20:45 ` Michael-Luke Jones
2007-05-27 21:55 ` Rafael J. Wysocki
2007-05-28 13:01 ` Pavel Machek
2007-05-29 20:41 ` Rob Landley
2007-05-27 20:49 ` Matthew Garrett [this message]
2007-05-27 21:45 ` Rafael J. Wysocki
2007-05-27 22:01 ` Matthew Garrett
2007-05-28 7:44 ` Rafael J. Wysocki
2007-05-28 16:09 ` Alan Stern
2007-05-28 16:12 ` Matthew Garrett
2007-05-28 16:43 ` Alan Stern
2007-05-28 16:54 ` Matthew Garrett
2007-05-28 20:03 ` Alan Stern
2007-05-28 20:57 ` Pavel Machek
2007-05-28 22:29 ` Alan Stern
2007-05-29 20:09 ` [linux-pm] " David Brownell
2007-05-29 20:48 ` Alan Stern
2007-06-04 11:00 ` Pavel Machek
2007-06-05 18:45 ` Alan Stern
2007-06-05 20:26 ` Pavel Machek
2007-05-28 8:30 ` Nigel Cunningham
2007-05-28 11:22 ` Rafael J. Wysocki
2007-05-27 21:49 ` Kay Sievers
2007-05-27 22:01 ` Rafael J. Wysocki
2007-05-27 22:04 ` Matthew Garrett
2007-05-27 22:16 ` Kay Sievers
2007-05-28 7:43 ` Rafael J. Wysocki
2007-05-28 8:48 ` Michael-Luke Jones
2007-05-28 9:06 ` Kay Sievers
2007-05-28 10:26 ` Michael-Luke Jones
2007-05-28 12:01 ` Kay Sievers
2007-05-28 12:07 ` Michael-Luke Jones
2007-05-28 10:41 ` Michael-Luke Jones
2007-05-29 21:19 ` Rob Landley
2007-05-29 22:51 ` Rob Landley
2007-05-30 19:50 ` Pavel Machek
2007-05-28 11:15 ` Pavel Machek
2007-05-28 11:24 ` Kay Sievers
2007-05-28 11:28 ` Pavel Machek
2007-05-28 11:38 ` Michael-Luke Jones
2007-05-28 11:45 ` [linux-pm] " Pavel Machek
2007-05-28 11:51 ` Kay Sievers
2007-05-28 12:26 ` Michael-Luke Jones
2007-05-28 12:47 ` Kay Sievers
2007-05-28 13:00 ` Pavel Machek
2007-05-28 13:10 ` Michael-Luke Jones
2007-05-28 11:28 ` Rafael J. Wysocki
2007-05-28 13:07 ` Pavel Machek
2007-05-28 15:55 ` Alan Stern
2007-05-28 17:43 ` Rafael J. Wysocki
2007-05-28 20:51 ` Ray Lee
2007-05-28 20:59 ` Pavel Machek
2007-06-02 0:41 ` [RFC][PATCH -mm 0/2] PM: Hibernation and suspend notifiers (rev. 2) Rafael J. Wysocki
2007-06-02 0:43 ` [RFC][PATCH -mm 1/2] PM: Introduce hibernation and suspend notifiers Rafael J. Wysocki
2007-06-03 16:41 ` Pavel Machek
2007-06-03 22:38 ` Rafael J. Wysocki
2007-06-03 22:59 ` Pavel Machek
2007-06-04 7:56 ` Rafael J. Wysocki
2007-06-02 0:44 ` [RFC][PATCH -mm 2/2] PM: Disable usermode helper before hibernation and suspend Rafael J. Wysocki
2007-06-03 16:42 ` Pavel Machek
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