From: "Arve Hjønnevåg" <arve@android.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>, "Rafael J. Wysocki" <rjw@sisk.pl>,
"Eric W. Biederman" <ebiederm@xmission.com>,
LKML <linux-kernel@vger.kernel.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Jeremy Fitzhardinge <jeremy@goop.org>,
pm list <linux-pm@lists.linux-foundation.org>,
Len Brown <lenb@kernel.org>,
Jesse Barnes <jbarnes@virtuousgeek.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [RFC][PATCH 2/2] PM: Rework handling of interrupts during suspend-resume
Date: Wed, 25 Feb 2009 20:13:27 -0800 [thread overview]
Message-ID: <d6200be20902252013v366ce771w8a129e9f3b75927f@mail.gmail.com> (raw)
In-Reply-To: <alpine.LFD.2.00.0902251956450.3111@localhost.localdomain>
On Wed, Feb 25, 2009 at 7:57 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
>
> On Wed, 25 Feb 2009, Arve Hjønnevåg wrote:
>>
>> I don't think this is a oddball case. It is very common to connect
>> keys or keypads to gpios. If these keys are wakeup keys, it is not OK
>> to loose interrupts during the suspend phase.
>
> .. and how many drivers is that? Is it one or two "gpio input drivers" or
> is it a hundred?
>
> The "common" is not so much about "how many machines", but "in how many
> drivers would you actually do this".
We only have one gpio input driver, but I don't think is good to loose
any wakeup interrupts. Any driver that needs an edge triggered wakeup
interrupt will have problems if the hardware does not regenerate the
interrupt when the host does not respond.
It is not hard to work around this problem in the platform specific
interrupt code, but I think it is a generic problem worth fixing for
every platform.
--
Arve Hjønnevåg
next prev parent reply other threads:[~2009-02-26 4:13 UTC|newest]
Thread overview: 187+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-22 17:37 [RFC][PATCH 0/2] Rework disabling " Rafael J. Wysocki
2009-02-22 17:38 ` [RFC][PATCH 1/2] PM: Split up sysdev_[suspend|resume] from device_power_[down|up] Rafael J. Wysocki
2009-02-22 20:56 ` Adrian Bunk
2009-02-22 21:07 ` Linus Torvalds
2009-02-22 21:12 ` Ingo Molnar
2009-02-22 22:42 ` Adrian Bunk
2009-03-05 16:54 ` Pavel Machek
2009-02-22 17:39 ` [RFC][PATCH 2/2] PM: Rework handling of interrupts during suspend-resume Rafael J. Wysocki
2009-02-22 18:01 ` Linus Torvalds
2009-02-22 22:42 ` Rafael J. Wysocki
2009-02-22 23:48 ` Rafael J. Wysocki
2009-02-23 0:05 ` Linus Torvalds
2009-02-23 1:23 ` Linus Torvalds
2009-02-23 10:52 ` Rafael J. Wysocki
2009-02-23 3:04 ` Eric W. Biederman
2009-02-23 8:44 ` Ingo Molnar
2009-02-23 9:22 ` Eric W. Biederman
2009-02-23 9:44 ` Ingo Molnar
2009-02-23 10:42 ` Eric W. Biederman
2009-02-23 11:03 ` Rafael J. Wysocki
2009-02-23 15:28 ` Eric W. Biederman
2009-02-23 21:39 ` Rafael J. Wysocki
2009-02-24 3:30 ` Eric W. Biederman
2009-02-24 22:42 ` Rafael J. Wysocki
2009-02-24 22:51 ` Linus Torvalds
2009-02-24 23:07 ` Rafael J. Wysocki
2009-02-24 23:09 ` Ingo Molnar
2009-02-24 23:29 ` Rafael J. Wysocki
2009-02-25 13:23 ` Ingo Molnar
2009-02-26 1:17 ` Arve Hjønnevåg
2009-02-26 1:27 ` Linus Torvalds
2009-02-26 2:13 ` Arve Hjønnevåg
2009-02-26 2:51 ` Linus Torvalds
2009-02-26 3:00 ` Ingo Molnar
2009-02-26 3:31 ` Arve Hjønnevåg
2009-02-26 3:37 ` Linus Torvalds
2009-02-26 3:50 ` Arve Hjønnevåg
2009-02-26 3:57 ` Linus Torvalds
2009-02-26 4:13 ` Arve Hjønnevåg [this message]
2009-02-26 4:20 ` Eric W. Biederman
2009-02-26 4:24 ` Arve Hjønnevåg
2009-02-26 9:50 ` Rafael J. Wysocki
2009-02-26 20:34 ` Arve Hjønnevåg
2009-02-26 20:57 ` Benjamin Herrenschmidt
2009-02-26 21:20 ` Arve Hjønnevåg
2009-02-26 21:49 ` Benjamin Herrenschmidt
2009-02-26 21:58 ` Rafael J. Wysocki
2009-02-26 22:10 ` Linus Torvalds
2009-02-26 22:30 ` Arve Hjønnevåg
2009-02-26 23:10 ` Rafael J. Wysocki
2009-02-27 0:00 ` Arve Hjønnevåg
2009-02-27 0:27 ` Linus Torvalds
2009-02-27 3:20 ` [linux-pm] " Alan Stern
2009-02-27 4:43 ` Linus Torvalds
2009-02-27 14:59 ` Alan Stern
2009-02-27 20:30 ` Linus Torvalds
2009-02-28 3:54 ` Arve Hjønnevåg
2009-02-28 10:06 ` Rafael J. Wysocki
2009-02-28 17:03 ` Linus Torvalds
2009-02-28 22:15 ` Arve Hjønnevåg
2009-02-26 22:30 ` Rafael J. Wysocki
2009-02-25 4:16 ` Eric W. Biederman
2009-02-25 4:26 ` Linus Torvalds
2009-02-25 4:59 ` Eric W. Biederman
2009-02-25 15:32 ` [linux-pm] " Alan Stern
2009-02-25 16:19 ` Linus Torvalds
2009-02-23 11:04 ` Ingo Molnar
2009-02-23 14:45 ` Rafael J. Wysocki
2009-02-23 15:06 ` Ingo Molnar
2009-02-23 21:59 ` Rafael J. Wysocki
2009-02-23 10:13 ` Benjamin Herrenschmidt
2009-02-23 8:36 ` Ingo Molnar
2009-02-23 11:29 ` Rafael J. Wysocki
2009-02-23 12:28 ` Ingo Molnar
2009-02-23 14:48 ` Rafael J. Wysocki
2009-02-23 20:49 ` Benjamin Herrenschmidt
2009-02-23 12:45 ` Ingo Molnar
2009-02-23 15:07 ` Rafael J. Wysocki
2009-02-23 15:52 ` Johannes Berg
2009-02-23 17:16 ` Ingo Molnar
2009-02-23 17:28 ` Linus Torvalds
2009-02-23 22:11 ` Rafael J. Wysocki
2009-02-23 22:11 ` Arve Hjønnevåg
2009-02-23 22:23 ` Rafael J. Wysocki
2009-02-23 22:44 ` Arve Hjønnevåg
2009-02-22 18:13 ` [RFC][PATCH 0/2] Rework disabling " Linus Torvalds
2009-02-22 18:18 ` Ingo Molnar
2009-02-22 18:25 ` Linus Torvalds
2009-02-22 18:35 ` Linus Torvalds
2009-02-22 22:37 ` Eric W. Biederman
2009-02-22 22:56 ` Benjamin Herrenschmidt
2009-02-22 23:02 ` Linus Torvalds
2009-03-01 22:21 ` [RFC][PATCH 0/4] " Rafael J. Wysocki
2009-03-01 22:24 ` [RFC][PATCH 1/4] PM: Rework handling of interrupts during suspend-resume (rev. 4) Rafael J. Wysocki
2009-03-02 23:01 ` Arve Hjønnevåg
2009-03-02 23:13 ` Rafael J. Wysocki
2009-03-02 23:18 ` Arve Hjønnevåg
2009-03-02 23:27 ` Rafael J. Wysocki
2009-03-03 22:56 ` Arve Hjønnevåg
2009-03-04 22:03 ` [Update, rev. 5] " Rafael J. Wysocki
2009-03-05 10:35 ` Ingo Molnar
2009-03-02 23:32 ` Linus Torvalds
2009-03-02 23:35 ` Linus Torvalds
2009-03-03 0:08 ` Arve Hjønnevåg
2009-03-03 8:41 ` Arve Hjønnevåg
2009-03-01 22:25 ` [RFC][PATCH 2/4] PM: Change suspend code ordering Rafael J. Wysocki
2009-03-02 20:48 ` Linus Torvalds
2009-03-02 22:02 ` Rafael J. Wysocki
2009-03-01 22:26 ` [RFC][PATCH 3/4] PM: Change hibernation " Rafael J. Wysocki
2009-03-01 22:27 ` [RFC][PATCH 4/4] kexec: Change kexec jump " Rafael J. Wysocki
2009-03-05 23:44 ` [RFC][PATCH 0/4] Rework disabling of interrupts during suspend-resume Linus Torvalds
2009-03-06 6:47 ` Sitsofe Wheeler
2009-03-06 10:19 ` Rafael J. Wysocki
2009-03-07 10:19 ` [RFC][PATCH][0/8] PM: Rework suspend-resume ordering to avoid problems with shared interrupts Rafael J. Wysocki
2009-03-07 10:20 ` [RFC][PATCH][1/8] PM: Rework handling of interrupts during suspend-resume (rev. 5) Rafael J. Wysocki
2009-03-07 16:51 ` [linux-pm] " Alan Stern
2009-03-07 17:56 ` Rafael J. Wysocki
2009-03-08 3:53 ` Alan Stern
2009-03-08 10:00 ` Rafael J. Wysocki
2009-03-08 12:37 ` Alan Stern
2009-03-08 17:20 ` Linus Torvalds
2009-03-08 20:40 ` Alan Stern
2009-03-08 21:37 ` Rafael J. Wysocki
2009-03-09 14:59 ` Linus Torvalds
2009-03-09 15:13 ` Alan Stern
2009-03-09 15:40 ` Linus Torvalds
2009-03-07 10:21 ` [RFC][PATCH][2/8] PM: Change suspend code ordering Rafael J. Wysocki
2009-03-07 10:22 ` [RFC][PATCH][3/8] PM: Change hibernation " Rafael J. Wysocki
2009-03-07 10:23 ` [RFC][PATCH][4/8] kexec: Change kexec jump " Rafael J. Wysocki
2009-03-07 10:24 ` [RFC][PATCH][5/8] PCI PM: Consistently use variable name "error" for pm call return values Rafael J. Wysocki
2009-03-07 10:25 ` [RFC][PATCH][6/8] PCI PM: Use pci_set_power_state during early resume Rafael J. Wysocki
2009-03-07 10:26 ` [RFC][PATCH][7/8] PCI PM: Move pci_restore_standard_config to pci-driver.c Rafael J. Wysocki
2009-03-07 10:27 ` [RFC][PATCH][8/8] PCI PM: Put devices into low power states during late suspend Rafael J. Wysocki
2009-03-08 19:28 ` [RFC][PATCH][0/8] PM: Rework suspend-resume ordering to avoid problems with shared interrupts Frans Pop
2009-03-08 20:50 ` Rafael J. Wysocki
2009-03-14 8:44 ` Frans Pop
2009-03-14 11:59 ` Rafael J. Wysocki
2009-03-14 14:11 ` Frans Pop
2009-03-14 22:31 ` Rafael J. Wysocki
2009-03-11 9:30 ` [PATCH 0/10] PM: Rework suspend-resume ordering to avoid problems with shared interrupts (updated) Rafael J. Wysocki
2009-03-11 9:36 ` [PATCH 1/10] PM: Rework handling of interrupts during suspend-resume (rev. 5) Rafael J. Wysocki
2009-03-11 10:33 ` Thomas Gleixner
2009-03-11 20:59 ` Rafael J. Wysocki
2009-03-11 21:42 ` Thomas Gleixner
2009-03-11 22:01 ` Rafael J. Wysocki
2009-03-11 22:45 ` Thomas Gleixner
2009-03-12 13:36 ` Rafael J. Wysocki
2009-03-12 21:43 ` [update, rev. 6] " Rafael J. Wysocki
2009-03-13 0:39 ` Ingo Molnar
2009-03-13 17:07 ` Rafael J. Wysocki
2009-03-13 7:15 ` Arve Hjønnevåg
2009-03-13 16:53 ` Rafael J. Wysocki
2009-03-13 19:55 ` Thomas Gleixner
2009-03-13 21:56 ` Rafael J. Wysocki
2009-03-14 7:31 ` Thomas Gleixner
2009-03-14 10:01 ` Rafael J. Wysocki
2009-03-14 0:04 ` Rafael J. Wysocki
2009-03-11 21:15 ` Rafael J. Wysocki
2009-03-11 21:35 ` Thomas Gleixner
2009-03-11 21:50 ` Rafael J. Wysocki
2009-03-11 21:53 ` Thomas Gleixner
2009-03-11 22:01 ` Linus Torvalds
2009-03-11 22:13 ` Rafael J. Wysocki
2009-03-11 22:25 ` Thomas Gleixner
2009-03-11 22:07 ` Rafael J. Wysocki
2009-03-11 9:37 ` [PATCH 2/10] PM: Change suspend code ordering Rafael J. Wysocki
2009-03-11 9:38 ` [PATCH 3/10] PM: Change hibernation " Rafael J. Wysocki
2009-03-11 9:39 ` [PATCH 4/10] kexec: Change kexec jump " Rafael J. Wysocki
2009-03-11 9:41 ` [PATCH 5/10] PCI PM: Consistently use variable name "error" for pm call return values Rafael J. Wysocki
2009-03-11 9:42 ` [PATCH 6/10] PCI PM: Use pci_set_power_state during early resume Rafael J. Wysocki
2009-03-11 9:47 ` [PATCH 7/10] PCI PM: Move pci_restore_standard_config to pci-driver.c Rafael J. Wysocki
2009-03-11 9:48 ` [PATCH 8/10] PCI PM: Put devices into low power states during late suspend (rev. 2) Rafael J. Wysocki
2009-03-11 9:55 ` [PATCH 9/10] PCI PM: Make pci_set_power_state() handle devices with no PM support Rafael J. Wysocki
2009-03-11 9:56 ` [PATCH 10/10] PCI PM: Restore config spaces of all devices during early resume Rafael J. Wysocki
2009-03-14 11:24 ` [PATCH 0/11] PM: Rework suspend-resume ordering to avoid problems with shared interrupts (updated 2x) Rafael J. Wysocki
2009-03-14 11:26 ` [PATCH 1/11] PM: Introduce functions for suspending and resuming device interrupts Rafael J. Wysocki
2009-03-14 11:27 ` [PATCH 2/11] PM: Rework handling of interrupts during suspend-resume Rafael J. Wysocki
2009-03-14 11:28 ` [PATCH 3/11] PM: Change suspend code ordering Rafael J. Wysocki
2009-03-14 11:28 ` [PATCH 4/11] PM: Change hibernation " Rafael J. Wysocki
2009-03-14 11:29 ` [PATCH 5/11] kexec: Change kexec jump " Rafael J. Wysocki
2009-03-14 11:30 ` [PATCH 6/11] PCI PM: Consistently use variable name "error" for pm call return values Rafael J. Wysocki
2009-03-14 11:31 ` [PATCH 7/11] PCI PM: Use pci_set_power_state during early resume Rafael J. Wysocki
2009-03-14 11:32 ` [PATCH 8/11] PCI PM: Move pci_restore_standard_config to pci-driver.c Rafael J. Wysocki
2009-03-14 11:32 ` [PATCH 9/11] PCI PM: Put devices into low power states during late suspend (rev. 2) Rafael J. Wysocki
2009-03-14 11:33 ` [PATCH 10/11] PCI PM: Make pci_set_power_state() handle devices with no PM support Rafael J. Wysocki
2009-03-14 11:34 ` [PATCH 11/11] PCI PM: Restore config spaces of all devices during early resume Rafael J. Wysocki
2009-03-14 11:43 ` [PATCH 0/11] PM: Rework suspend-resume ordering to avoid problems with shared interrupts (updated 2x) Ingo Molnar
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