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From: "Ricardo B. Marliere" <ricardo@marliere.net>
Date: Sat, 03 Feb 2024 11:58:03 -0300
Subject: [PATCH 6/6] s390: vfio-ap: make matrix_bus const
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Message-Id: <20240203-bus_cleanup-s390-v1-6-ac891afc7282@marliere.net>
References: <20240203-bus_cleanup-s390-v1-0-ac891afc7282@marliere.net>
In-Reply-To: <20240203-bus_cleanup-s390-v1-0-ac891afc7282@marliere.net>
To: Vineeth Vijayan <vneethv@linux.ibm.com>, 
 Peter Oberparleiter <oberpar@linux.ibm.com>, 
 Heiko Carstens <hca@linux.ibm.com>, Vasily Gorbik <gor@linux.ibm.com>, 
 Alexander Gordeev <agordeev@linux.ibm.com>, 
 Christian Borntraeger <borntraeger@linux.ibm.com>, 
 Sven Schnelle <svens@linux.ibm.com>, 
 Harald Freudenberger <freude@linux.ibm.com>, 
 Tony Krowiak <akrowiak@linux.ibm.com>, Halil Pasic <pasic@linux.ibm.com>, 
 Jason Herne <jjherne@linux.ibm.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, 
 linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, 
 "Ricardo B. Marliere" <ricardo@marliere.net>

Now that the driver core can properly handle constant struct bus_type,
move the matrix_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@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
---
 drivers/s390/crypto/vfio_ap_drv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/s390/crypto/vfio_ap_drv.c b/drivers/s390/crypto/vfio_ap_drv.c
index a5ab03e42ff1..4aeb3e1213c7 100644
--- a/drivers/s390/crypto/vfio_ap_drv.c
+++ b/drivers/s390/crypto/vfio_ap_drv.c
@@ -60,7 +60,7 @@ static void vfio_ap_matrix_dev_release(struct device *dev)
 	kfree(matrix_dev);
 }
 
-static struct bus_type matrix_bus = {
+static const struct bus_type matrix_bus = {
 	.name = "matrix",
 };
 

-- 
2.43.0