From: Ricardo B. Marliere <ricardo@marliere.net>
Date: Tue, 13 Feb 2024 14:46:25 +0000 (-0300)
Subject: tee: make tee_bus_type const
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=469f6acd9a538ea963e2d4d13ba721a7ad1c1813;p=linux.git

tee: make tee_bus_type const

Since commit d492cc2573a0 ("driver core: device.h: make struct
bus_type a const *"), the driver core can properly handle constant
struct bus_type, move the tee_bus_type variable to be a constant
structure as well, placing it into read-only memory which can not be
modified at runtime.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---

diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
index 792d6fae4354d..e59c20d74b36a 100644
--- a/drivers/tee/tee_core.c
+++ b/drivers/tee/tee_core.c
@@ -1226,7 +1226,7 @@ static int tee_client_device_uevent(const struct device *dev,
 	return add_uevent_var(env, "MODALIAS=tee:%pUb", dev_id);
 }
 
-struct bus_type tee_bus_type = {
+const struct bus_type tee_bus_type = {
 	.name		= "tee",
 	.match		= tee_client_device_match,
 	.uevent		= tee_client_device_uevent,
diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
index 911ddf92dcee7..71632e3c5f18f 100644
--- a/include/linux/tee_drv.h
+++ b/include/linux/tee_drv.h
@@ -482,7 +482,7 @@ static inline bool tee_param_is_memref(struct tee_param *param)
 	}
 }
 
-extern struct bus_type tee_bus_type;
+extern const struct bus_type tee_bus_type;
 
 /**
  * struct tee_client_device - tee based device