Messages in this thread Patch in this message | | | From | Dmitry Torokhov <> | Subject | [RESEND][PATCH 4/4] Driver core updates (needed for serio) | Date | Wed, 7 Jul 2004 20:41:32 -0500 |
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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 <dtor@mail.ru>
drivers/base/driver.c | 19 +++++++++++++++++++ include/linux/device.h | 1 + 2 files changed, 20 insertions(+)
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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 */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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