linux-kernel - [PATCH 2/2] serial: core: make serial_base_bus

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Message-Id: <20240203-bus_cleanup-tty-v1-2-86b698c82efe@marliere.net>
Date: Sat, 03 Feb 2024 16:14:51 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Rob Herring <robh@...nel.org>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Jiri Slaby <jirislaby@...nel.org>
Cc: linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH 2/2] serial: core: make serial_base_bus_type const

Now that the driver core can properly handle constant struct bus_type,
move the serial_base_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/tty/serial/serial_base_bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/serial_base_bus.c b/drivers/tty/serial/serial_base_bus.c
index 3dfcf20c4eb6..4df2a4b10445 100644
--- a/drivers/tty/serial/serial_base_bus.c
+++ b/drivers/tty/serial/serial_base_bus.c
@@ -41,7 +41,7 @@ static int serial_base_match(struct device *dev, struct device_driver *drv)
 	return 0;
 }

-static struct bus_type serial_base_bus_type = {
+static const struct bus_type serial_base_bus_type = {
 	.name = "serial-base",
 	.match = serial_base_match,
 };

-- 
2.43.0