From: Dmitry Torokhov <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>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
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 */
_