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Message-Id: <20240209-bus_cleanup-powerpc2-v1-4-79a56dcaebb1@marliere.net>
Date: Fri, 09 Feb 2024 21:07:19 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Michael Ellerman <mpe@...erman.id.au>,
Nicholas Piggin <npiggin@...il.com>,
Christophe Leroy <christophe.leroy@...roup.eu>,
"Aneesh Kumar K.V" <aneesh.kumar@...nel.org>,
"Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>
Cc: linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH 4/4] powerpc: ibmebus: make ibmebus_bus_type const
Now that the driver core can properly handle constant struct bus_type,
move the ibmebus_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>
---
arch/powerpc/include/asm/ibmebus.h | 2 +-
arch/powerpc/platforms/pseries/ibmebus.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/ibmebus.h b/arch/powerpc/include/asm/ibmebus.h
index 6f33253a364a..46fe406f461c 100644
--- a/arch/powerpc/include/asm/ibmebus.h
+++ b/arch/powerpc/include/asm/ibmebus.h
@@ -48,7 +48,7 @@
struct platform_driver;
-extern struct bus_type ibmebus_bus_type;
+extern const struct bus_type ibmebus_bus_type;
int ibmebus_register_driver(struct platform_driver *drv);
void ibmebus_unregister_driver(struct platform_driver *drv);
diff --git a/arch/powerpc/platforms/pseries/ibmebus.c b/arch/powerpc/platforms/pseries/ibmebus.c
index 998e3aff2457..4bb611afaba4 100644
--- a/arch/powerpc/platforms/pseries/ibmebus.c
+++ b/arch/powerpc/platforms/pseries/ibmebus.c
@@ -432,7 +432,7 @@ static int ibmebus_bus_modalias(const struct device *dev, struct kobj_uevent_env
return of_device_uevent_modalias(dev, env);
}
-struct bus_type ibmebus_bus_type = {
+const struct bus_type ibmebus_bus_type = {
.name = "ibmebus",
.uevent = ibmebus_bus_modalias,
.bus_groups = ibmbus_bus_groups,
--
2.43.0
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