Received-SPF: pass (google.com: domain of linux-kernel+bounces-58609-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249;
From: "Ricardo B. Marliere" <ricardo@marliere.net>
Date: Thu, 08 Feb 2024 16:17:51 -0300
Subject: [PATCH 1/2] staging: vc04_services: vchiq_arm: make vchiq_bus_type
 const
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Message-Id: <20240208-bus_cleanup-staging2-v1-1-cfe906133a2c@marliere.net>
References: <20240208-bus_cleanup-staging2-v1-0-cfe906133a2c@marliere.net>
In-Reply-To: <20240208-bus_cleanup-staging2-v1-0-cfe906133a2c@marliere.net>
To: Florian Fainelli <florian.fainelli@broadcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>, 
 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-rpi-kernel@lists.infradead.org, 
 linux-arm-kernel@lists.infradead.org, linux-staging@lists.linux.dev, 
 linux-kernel@vger.kernel.org, "Ricardo B. Marliere" <ricardo@marliere.net>

Now that the driver core can properly handle constant struct bus_type,
move the vchiq_bus_type variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
---
 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.c | 2 +-
 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.c
index 933027e0011e..68f830d75531 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.c
@@ -37,7 +37,7 @@ static int vchiq_bus_probe(struct device *dev)
 	return driver->probe(device);
 }
 
-struct bus_type vchiq_bus_type = {
+const struct bus_type vchiq_bus_type = {
 	.name   = "vchiq-bus",
 	.match  = vchiq_bus_type_match,
 	.uevent = vchiq_bus_uevent,
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.h
index caa6fdf25bb1..4db86e76edbd 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.h
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.h
@@ -34,7 +34,7 @@ static inline struct vchiq_driver *to_vchiq_driver(struct device_driver *d)
 	return container_of(d, struct vchiq_driver, driver);
 }
 
-extern struct bus_type vchiq_bus_type;
+extern const struct bus_type vchiq_bus_type;
 
 struct vchiq_device *
 vchiq_device_register(struct device *parent, const char *name);

-- 
2.43.0