From: Dmitry Torokhov Driver core: add driver_find helper to find a driver by its name Signed-off-by: Dmitry Torokhov Signed-off-by: Andrew Morton --- 25-akpm/drivers/base/driver.c | 16 ++++++++++++++++ 25-akpm/include/linux/device.h | 1 + 2 files changed, 17 insertions(+) diff -puN drivers/base/driver.c~input-add-driver_find drivers/base/driver.c --- 25/drivers/base/driver.c~input-add-driver_find 2004-06-27 22:51:13.521139536 -0700 +++ 25-akpm/drivers/base/driver.c 2004-06-27 22:51:13.527138624 -0700 @@ -111,10 +111,26 @@ void driver_unregister(struct device_dri up(&drv->unload_sem); } +/** + * driver_find - find driver on a given bus by its name. + * @name: name of the driver. + * @bus: bus to seatch for the driver + */ + +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 -puN include/linux/device.h~input-add-driver_find include/linux/device.h --- 25/include/linux/device.h~input-add-driver_find 2004-06-27 22:51:13.523139232 -0700 +++ 25-akpm/include/linux/device.h 2004-06-27 22:51:13.529138320 -0700 @@ -120,6 +120,7 @@ extern void driver_unregister(struct dev 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 */ _