linux-kernel - [PATCH 1/2] serdev: make serdev_bus

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Message-Id: <20240203-bus_cleanup-tty-v1-1-86b698c82efe@marliere.net>
Date: Sat, 03 Feb 2024 16:14:50 -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 1/2] serdev: make serdev_bus_type const

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

diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index 822a5cd05566..613cb356b918 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -431,7 +431,7 @@ static void serdev_drv_remove(struct device *dev)
 	dev_pm_domain_detach(dev, true);
 }

-static struct bus_type serdev_bus_type = {
+static const struct bus_type serdev_bus_type = {
 	.name		= "serial",
 	.match		= serdev_device_match,
 	.probe		= serdev_drv_probe,

-- 
2.43.0