linux-kernel - [PATCH] input: gameport: make gameport

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Message-Id: <20240204-bus_cleanup-input-v1-1-74c2438801cf@marliere.net>
Date: Sun, 04 Feb 2024 16:56:34 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH] input: gameport: make gameport_bus const

Now that the driver core can properly handle constant struct bus_type,
move the gameport_bus 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/input/gameport/gameport.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c
index 34f416a3ebcb..cfcc81c47b50 100644
--- a/drivers/input/gameport/gameport.c
+++ b/drivers/input/gameport/gameport.c
@@ -38,7 +38,7 @@ static DEFINE_MUTEX(gameport_mutex);

 static LIST_HEAD(gameport_list);

-static struct bus_type gameport_bus;
+static const struct bus_type gameport_bus;

 static void gameport_add_port(struct gameport *gameport);
 static void gameport_attach_driver(struct gameport_driver *drv);
@@ -813,7 +813,7 @@ static int gameport_bus_match(struct device *dev, struct device_driver *drv)
 	return !gameport_drv->ignore;
 }

-static struct bus_type gameport_bus = {
+static const struct bus_type gameport_bus = {
 	.name		= "gameport",
 	.dev_groups	= gameport_device_groups,
 	.drv_groups	= gameport_driver_groups,

---
base-commit: 7d0f351da46098b3bbb147f886f059473b84ff48
change-id: 20240204-bus_cleanup-input-76cc02d48361

Best regards,
-- 
Ricardo B. Marliere <ricardo@...liere.net>