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Message-ID: <2023121950-prankster-stomp-a1aa@gregkh>
Date: Tue, 19 Dec 2023 16:07:51 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: wintera@...ux.ibm.com,
wenjia@...ux.ibm.com
Cc: linux-kernel@...r.kernel.org,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
linux-s390@...r.kernel.org,
netdev@...r.kernel.org
Subject: [PATCH] icuv: make iucv_bus const
Now that the driver core can properly handle constant struct bus_type,
move the iucv_bus variable to be a constant structure as well, placing
it into read-only memory which can not be modified at runtime.
Cc: Alexandra Winter <wintera@...ux.ibm.com>
Cc: Wenjia Zhang <wenjia@...ux.ibm.com>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Eric Dumazet <edumazet@...gle.com>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Paolo Abeni <pabeni@...hat.com>
Cc: linux-s390@...r.kernel.org
Cc: netdev@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
include/net/iucv/iucv.h | 4 ++--
net/iucv/iucv.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/net/iucv/iucv.h b/include/net/iucv/iucv.h
index f9e88401d7da..8b2055d64a6b 100644
--- a/include/net/iucv/iucv.h
+++ b/include/net/iucv/iucv.h
@@ -80,7 +80,7 @@ struct iucv_array {
u32 length;
} __attribute__ ((aligned (8)));
-extern struct bus_type iucv_bus;
+extern const struct bus_type iucv_bus;
extern struct device *iucv_root;
/*
@@ -489,7 +489,7 @@ struct iucv_interface {
int (*path_sever)(struct iucv_path *path, u8 userdata[16]);
int (*iucv_register)(struct iucv_handler *handler, int smp);
void (*iucv_unregister)(struct iucv_handler *handler, int smp);
- struct bus_type *bus;
+ const struct bus_type *bus;
struct device *root;
};
diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index 0ed6e34d6edd..6334f64f04d5 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -67,7 +67,7 @@ static int iucv_bus_match(struct device *dev, struct device_driver *drv)
return 0;
}
-struct bus_type iucv_bus = {
+const struct bus_type iucv_bus = {
.name = "iucv",
.match = iucv_bus_match,
};
--
2.43.0
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