From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arjan van de Ven Subject: [PATCH 4/6] fastboot: make ACPI bus drivers probe asynchronous Date: Mon, 5 Jan 2009 20:12:39 -0800 Message-ID: <20090105201239.0784606e@infradead.org> References: <20090105200959.04a626ac@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Return-path: In-Reply-To: <20090105200959.04a626ac@infradead.org> Sender: linux-acpi-owner@vger.kernel.org To: Arjan van de Ven Cc: linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, mingo@elte.hu, akpm@linux-foundation.org, linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org, linux-acpi@vger.kernel.org List-Id: linux-ide@vger.kernel.org >>From 34c47dd38f49e29eb7cd7fa2078efc6b8b258bb9 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Sun, 4 Jan 2009 05:32:28 -0800 Subject: [PATCH] fastboot: make ACPI bus drivers probe asynchronous the various ACPI bus drivers have non-overlapping devices and can each be run asynchronous. Some of the ACPI drivers (especially the battery one, but others as well) can take quite a long time to probe. Signed-off-by: Arjan van de Ven --- drivers/acpi/scan.c | 23 ++++++++++++++++------- 1 files changed, 16 insertions(+), 7 deletions(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 39b7233..a9e542d 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include /* for acpi_ex_eisa_id_to_string() */ @@ -578,6 +579,19 @@ static int acpi_start_single_object(struct acpi_device *device) return result; } +static void acpi_bus_register_async(void *data, async_cookie_t cookie) +{ + int ret; + struct acpi_driver *driver = data; + driver->drv.name = driver->name; + driver->drv.bus = &acpi_bus_type; + driver->drv.owner = driver->owner; + + async_synchronize_cookie(cookie); + + ret = driver_register(&driver->drv); + WARN_ON(ret != 0); +} /** * acpi_bus_register_driver - register a driver with the ACPI bus * @driver: driver being registered @@ -588,16 +602,11 @@ static int acpi_start_single_object(struct acpi_device *device) */ int acpi_bus_register_driver(struct acpi_driver *driver) { - int ret; if (acpi_disabled) return -ENODEV; - driver->drv.name = driver->name; - driver->drv.bus = &acpi_bus_type; - driver->drv.owner = driver->owner; - - ret = driver_register(&driver->drv); - return ret; + async_schedule(acpi_bus_register_async, driver); + return 0; } EXPORT_SYMBOL(acpi_bus_register_driver); -- 1.6.0.6 -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org