From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265747AbUGHBoC (ORCPT ); Wed, 7 Jul 2004 21:44:02 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265749AbUGHBnG (ORCPT ); Wed, 7 Jul 2004 21:43:06 -0400 Received: from smtp803.mail.sc5.yahoo.com ([66.163.168.182]:51312 "HELO smtp803.mail.sc5.yahoo.com") by vger.kernel.org with SMTP id S265743AbUGHBm3 (ORCPT ); Wed, 7 Jul 2004 21:42:29 -0400 From: Dmitry Torokhov To: Greg KH Subject: [RESEND][PATCH 4/4] Driver core updates (needed for serio) Date: Wed, 7 Jul 2004 20:41:32 -0500 User-Agent: KMail/1.6.2 Cc: LKML References: <200407072038.27158.dtor_core@ameritech.net> <200407072040.01818.dtor_core@ameritech.net> <200407072040.48498.dtor_core@ameritech.net> In-Reply-To: <200407072040.48498.dtor_core@ameritech.net> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <200407072041.41497.dtor_core@ameritech.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org =================================================================== ChangeSet@1.1822, 2004-07-07 18:18:04-05:00, dtor_core@ameritech.net Driver core: add driver_find helper to find a driver by its name Signed-off-by: Dmitry Torokhov drivers/base/driver.c | 19 +++++++++++++++++++ include/linux/device.h | 1 + 2 files changed, 20 insertions(+) =================================================================== diff -Nru a/drivers/base/driver.c b/drivers/base/driver.c --- a/drivers/base/driver.c 2004-07-07 19:56:21 -05:00 +++ b/drivers/base/driver.c 2004-07-07 19:56:21 -05:00 @@ -111,10 +111,29 @@ up(&drv->unload_sem); } +/** + * driver_find - locate driver on a bus by its name. + * @name: name of the driver. + * @bus: bus to scan for the driver. + * + * Call kset_find_obj() to iterate over list of drivers on + * a bus to find driver by name. Return driver if found. + * + * Note that kset_find_obj increments driver's reference count. + */ +struct device_driver *driver_find(const char *name, struct bus_type *bus) +{ + struct kobject *k = kset_find_obj(&bus->drivers, name); + if (k) + return to_drv(k); + return NULL; +} + EXPORT_SYMBOL(driver_register); EXPORT_SYMBOL(driver_unregister); EXPORT_SYMBOL(get_driver); EXPORT_SYMBOL(put_driver); +EXPORT_SYMBOL(driver_find); EXPORT_SYMBOL(driver_create_file); EXPORT_SYMBOL(driver_remove_file); diff -Nru a/include/linux/device.h b/include/linux/device.h --- a/include/linux/device.h 2004-07-07 19:56:21 -05:00 +++ b/include/linux/device.h 2004-07-07 19:56:21 -05:00 @@ -120,6 +120,7 @@ extern struct device_driver * get_driver(struct device_driver * drv); extern void put_driver(struct device_driver * drv); +extern struct device_driver *driver_find(const char *name, struct bus_type *bus); /* driverfs interface for exporting driver attributes */