[PATCH v1 01/17] tee: Add some helpers to reduce boilerplate for tee client drivers

Uwe Kleine-König
2025-12-12T10:57:49Z

Similar to platform drivers (and others) create dedicated register and
unregister functions and a macro to simplify modules that only need to
handle driver registration in their init and exit handlers.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
---
drivers/tee/tee_core.c | 16 ++++++++++++++++
include/linux/tee_drv.h | 9 +++++++++
2 files changed, 25 insertions(+)

diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
index d65d47cc154e..51379f7fc5d5 100644
--- a/drivers/tee/tee_core.c
+++ b/drivers/tee/tee_core.c
@@ -1405,6 +1405,22 @@ const struct bus_type tee_bus_type = {
};
EXPORT_SYMBOL_GPL(tee_bus_type);

+int __tee_client_driver_register(struct tee_client_driver *tee_driver,
+ struct module *owner)
+{
+ tee_driver->driver.owner = owner;
+ tee_driver->driver.bus = &tee_bus_type;
+
+ return driver_register(&tee_driver->driver);
+}
+EXPORT_SYMBOL_GPL(__tee_client_driver_register);
+
+void tee_client_driver_unregister(struct tee_client_driver *tee_driver)
+{
+ driver_unregister(&tee_driver->driver);
+}
+EXPORT_SYMBOL_GPL(tee_client_driver_unregister);
+
static int __init tee_init(void)
{
int rc;
diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
index 88a6f9697c89..850c03b2cdea 100644
--- a/include/linux/tee_drv.h
+++ b/include/linux/tee_drv.h
@@ -322,4 +322,13 @@ struct tee_client_driver {
#define to_tee_client_driver(d) \
container_of_const(d, struct tee_client_driver, driver)

+#define tee_client_driver_register(drv) \
+ __tee_client_driver_register(drv, THIS_MODULE)
+int __tee_client_driver_register(struct tee_client_driver *, struct module *);
+void tee_client_driver_unregister(struct tee_client_driver *);
+
+#define module_tee_client_driver(__tee_client_driver) \
+ module_driver(__tee_client_driver, tee_client_driver_register, \
+ tee_client_driver_unregister)
+
#endif /*__TEE_DRV_H*/
--
2.47.3