linux-kernel - [PATCH 2/2] media: media-devnode: make media_bus

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Message-Id: <20240203-bus_cleanup-media-v1-2-33e8feeab912@marliere.net>
Date: Sat, 03 Feb 2024 12:31:27 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Hans Verkuil <hverkuil-cisco@...all.nl>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Sakari Ailus <sakari.ailus@...ux.intel.com>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH 2/2] media: media-devnode: make media_bus_type const

Now that the driver core can properly handle constant struct bus_type,
move the media_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@...uxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@...liere.net>
---
 drivers/media/mc/mc-devnode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/mc/mc-devnode.c b/drivers/media/mc/mc-devnode.c
index 680fbb3a9340..90646805bd81 100644
--- a/drivers/media/mc/mc-devnode.c
+++ b/drivers/media/mc/mc-devnode.c
@@ -63,7 +63,7 @@ static void media_devnode_release(struct device *cd)
 	pr_debug("%s: Media Devnode Deallocated\n", __func__);
 }

-static struct bus_type media_bus_type = {
+static const struct bus_type media_bus_type = {
 	.name = MEDIA_NAME,
 };

-- 
2.43.0