linux-kernel - [PATCH 2/2] staging: vme: make vme_bus

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Message-Id: <20240208-bus_cleanup-staging2-v1-2-cfe906133a2c@marliere.net>
Date: Thu, 08 Feb 2024 16:17:52 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Florian Fainelli <florian.fainelli@...adcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-rpi-kernel@...ts.infradead.org, 
 linux-arm-kernel@...ts.infradead.org, linux-staging@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH 2/2] staging: vme: make vme_bus_type const

Now that the driver core can properly handle constant struct bus_type,
move the vme_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@...uxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@...liere.net>
---
 drivers/staging/vme_user/vme.c | 2 +-
 drivers/staging/vme_user/vme.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/vme_user/vme.c b/drivers/staging/vme_user/vme.c
index e9461a7a7ab8..0cd370ab1008 100644
--- a/drivers/staging/vme_user/vme.c
+++ b/drivers/staging/vme_user/vme.c
@@ -1970,7 +1970,7 @@ static void vme_bus_remove(struct device *dev)
 		driver->remove(vdev);
 }

-struct bus_type vme_bus_type = {
+const struct bus_type vme_bus_type = {
 	.name = "vme",
 	.match = vme_bus_match,
 	.probe = vme_bus_probe,
diff --git a/drivers/staging/vme_user/vme.h b/drivers/staging/vme_user/vme.h
index 06504dccd5ff..26aa40f78a74 100644
--- a/drivers/staging/vme_user/vme.h
+++ b/drivers/staging/vme_user/vme.h
@@ -81,7 +81,7 @@ struct vme_resource {
 	struct list_head *entry;
 };

-extern struct bus_type vme_bus_type;
+extern const struct bus_type vme_bus_type;

 /* Number of VME interrupt vectors */
 #define VME_NUM_STATUSID	256

-- 
2.43.0