From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: [PATCH -mm 4/8] serio: Speed-up resume Date: Thu, 10 Jul 2008 02:01:55 +0200 Message-ID: <200807100201.56232.rjw@sisk.pl> References: <200807100152.17755.rjw@sisk.pl> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-2" Content-Transfer-Encoding: 7bit Return-path: Received: from ogre.sisk.pl ([217.79.144.158]:49038 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756037AbYGJAGi (ORCPT ); Wed, 9 Jul 2008 20:06:38 -0400 In-Reply-To: <200807100152.17755.rjw@sisk.pl> Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Andrew Morton Cc: ACPI Devel Maling List , LKML , Pavel Machek , pm list , Shaohua Li , Len Brown , Dmitry Torokhov From: Shaohua Li Subject: serio: Speed-up resume serio_resume will call into psmouse_extensions(). In my test, the routine is very slow, it blocks resume about 1 sec. Below patch (move resume to kseriod, just like boot time probe) cures the issue in my test, and seems no side effect. I'm no familiar with serio driver, so please check. Signed-off-by: Shaohua Li Acked-by: Len Brown Signed-off-by: Rafael J. Wysocki --- drivers/input/serio/serio.c | 33 +++++++++++++++++++++++++-------- 1 file changed, 25 insertions(+), 8 deletions(-) Index: linux-next/drivers/input/serio/serio.c =================================================================== --- linux-next.orig/drivers/input/serio/serio.c +++ linux-next/drivers/input/serio/serio.c @@ -163,6 +163,7 @@ enum serio_event_type { SERIO_RECONNECT_PORT, SERIO_REGISTER_PORT, SERIO_ATTACH_DRIVER, + SERIO_RESUME_PORT, }; struct serio_event { @@ -287,6 +288,13 @@ static struct serio_event *serio_get_eve return event; } +#ifdef CONFIG_PM +static void serio_resume_port(struct device *dev); +#else +static inline void serio_resume_port(struct device *dev) +{ +} +#endif /* CONFIG_PM */ static void serio_handle_event(void) { struct serio_event *event; @@ -319,6 +327,10 @@ static void serio_handle_event(void) serio_attach_driver(event->object); break; + case SERIO_RESUME_PORT: + serio_resume_port(event->object); + break; + default: break; } @@ -925,21 +937,26 @@ static int serio_suspend(struct device * return 0; } -static int serio_resume(struct device *dev) +static void serio_resume_port(struct device *dev) { struct serio *serio = to_serio_port(dev); - if (dev->power.power_state.event != PM_EVENT_ON && - serio_reconnect_driver(serio)) { - /* - * Driver re-probing can take a while, so better let kseriod - * deal with it. - */ - serio_rescan(serio); + if (serio_reconnect_driver(serio)) { + serio_disconnect_port(serio); + serio_find_driver(serio); } dev->power.power_state = PMSG_ON; +} +static int serio_resume(struct device *dev) +{ + /* + * Driver reconnect can take a while, so better let kseriod + * deal with it. + */ + if (dev->power.power_state.event != PM_EVENT_ON) + serio_queue_event(dev, NULL, SERIO_RESUME_PORT); return 0; } #endif /* CONFIG_PM */