linux-kernel - [PATCH] ata: pata_parport: make pata_parport_bus

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Message-Id: <20240204-bus_cleanup-ata-v1-1-2bdc1fadf356@marliere.net>
Date: Sun, 04 Feb 2024 12:23:29 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Damien Le Moal <dlemoal@...nel.org>, Niklas Cassel <cassel@...nel.org>
Cc: linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH] ata: pata_parport: make pata_parport_bus_type const

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

diff --git a/drivers/ata/pata_parport/pata_parport.c b/drivers/ata/pata_parport/pata_parport.c
index a7adfdcb5e27..9a2cb9ca9d1d 100644
--- a/drivers/ata/pata_parport/pata_parport.c
+++ b/drivers/ata/pata_parport/pata_parport.c
@@ -464,7 +464,7 @@ static void pata_parport_bus_release(struct device *dev)
 	/* nothing to do here but required to avoid warning on device removal */
 }

-static struct bus_type pata_parport_bus_type = {
+static const struct bus_type pata_parport_bus_type = {
 	.name = DRV_NAME,
 };

---
base-commit: c8474c7273ac3bad718c33118aa82efb7b374f6e
change-id: 20240204-bus_cleanup-ata-bd1625fdab09

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