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Date: Sat, 03 Feb 2024 11:57:59 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Vineeth Vijayan <vneethv@...ux.ibm.com>, 
 Peter Oberparleiter <oberpar@...ux.ibm.com>, 
 Heiko Carstens <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>, 
 Alexander Gordeev <agordeev@...ux.ibm.com>, 
 Christian Borntraeger <borntraeger@...ux.ibm.com>, 
 Sven Schnelle <svens@...ux.ibm.com>, 
 Harald Freudenberger <freude@...ux.ibm.com>, 
 Tony Krowiak <akrowiak@...ux.ibm.com>, Halil Pasic <pasic@...ux.ibm.com>, 
 Jason Herne <jjherne@...ux.ibm.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH 2/6] s390: cio: make css_bus_type const

Now that the driver core can properly handle constant struct bus_type,
move the css_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/s390/cio/css.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 28a88ed2c3aa..094431a62ad5 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -39,7 +39,7 @@ int max_ssid;
 
 #define MAX_CSS_IDX 0
 struct channel_subsystem *channel_subsystems[MAX_CSS_IDX + 1];
-static struct bus_type css_bus_type;
+static const struct bus_type css_bus_type;
 
 int
 for_each_subchannel(int(*fn)(struct subchannel_id, void *), void *data)
@@ -1409,7 +1409,7 @@ static int css_uevent(const struct device *dev, struct kobj_uevent_env *env)
 	return ret;
 }
 
-static struct bus_type css_bus_type = {
+static const struct bus_type css_bus_type = {
 	.name     = "css",
 	.match    = css_bus_match,
 	.probe    = css_probe,

-- 
2.43.0


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