linux-kernel - [PATCH] parport: make parport_bus

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Message-Id: <20240204-bus_cleanup-parport-v1-1-e6a0f756bbb8@marliere.net>
Date: Sun, 04 Feb 2024 17:25:51 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc: linux-kernel@...r.kernel.org, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH] parport: make parport_bus_type const

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

diff --git a/drivers/parport/share.c b/drivers/parport/share.c
index 49c74ded8a53..08dfa74be3c5 100644
--- a/drivers/parport/share.c
+++ b/drivers/parport/share.c
@@ -130,7 +130,7 @@ static int parport_probe(struct device *dev)
 	return drv->probe(to_pardevice(dev));
 }

-static struct bus_type parport_bus_type = {
+static const struct bus_type parport_bus_type = {
 	.name = "parport",
 	.probe = parport_probe,
 };

---
base-commit: 41b9fb381a486360b2daaec0c7480f8e3ff72bc7
change-id: 20240204-bus_cleanup-parport-a016e7319d81

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