linux-kernel - [PATCH] driver core: mark remaining local bus

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Date: Tue, 19 Dec 2023 16:35:09 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: rafael@...nel.org,
	linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Dave Ertman <david.m.ertman@...el.com>,
	Ira Weiny <ira.weiny@...el.com>,
	William Breathitt Gray <william.gray@...aro.org>,
	David Hildenbrand <david@...hat.com>,
	Oscar Salvador <osalvador@...e.de>,
	Kevin Hilman <khilman@...nel.org>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Len Brown <len.brown@...el.com>
Subject: [PATCH] driver core: mark remaining local bus_type variables as const

Now that the driver core can properly handle constant struct bus_type,
change the local driver core bus_type variables to be a constant
structure as well, placing them into read-only memory which can not be
modified at runtime.

Cc: Dave Ertman <david.m.ertman@...el.com>
Cc: Ira Weiny <ira.weiny@...el.com>
Cc: "Rafael J. Wysocki" <rafael@...nel.org>
Cc: William Breathitt Gray <william.gray@...aro.org>
Cc: David Hildenbrand <david@...hat.com>
Cc: Oscar Salvador <osalvador@...e.de>
Cc: Kevin Hilman <khilman@...nel.org>
Cc: Ulf Hansson <ulf.hansson@...aro.org>
Cc: Len Brown <len.brown@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/base/auxiliary.c    | 2 +-
 drivers/base/isa.c          | 2 +-
 drivers/base/memory.c       | 2 +-
 drivers/base/node.c         | 2 +-
 drivers/base/power/domain.c | 2 +-
 drivers/base/soc.c          | 2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/base/auxiliary.c b/drivers/base/auxiliary.c
index 4d4c2c8d26c4..d3a2c40c2f12 100644
--- a/drivers/base/auxiliary.c
+++ b/drivers/base/auxiliary.c
@@ -244,7 +244,7 @@ static void auxiliary_bus_shutdown(struct device *dev)
 		auxdrv->shutdown(auxdev);
 }
 
-static struct bus_type auxiliary_bus_type = {
+static const struct bus_type auxiliary_bus_type = {
 	.name = "auxiliary",
 	.probe = auxiliary_bus_probe,
 	.remove = auxiliary_bus_remove,
diff --git a/drivers/base/isa.c b/drivers/base/isa.c
index 675ad3139224..e23d0b49a793 100644
--- a/drivers/base/isa.c
+++ b/drivers/base/isa.c
@@ -82,7 +82,7 @@ static int isa_bus_resume(struct device *dev)
 	return 0;
 }
 
-static struct bus_type isa_bus_type = {
+static const struct bus_type isa_bus_type = {
 	.name		= "isa",
 	.match		= isa_bus_match,
 	.probe		= isa_bus_probe,
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index f3b9a4d0fa3b..4ac3266da6b5 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -68,7 +68,7 @@ static inline unsigned long phys_to_block_id(unsigned long phys)
 static int memory_subsys_online(struct device *dev);
 static int memory_subsys_offline(struct device *dev);
 
-static struct bus_type memory_subsys = {
+static const struct bus_type memory_subsys = {
 	.name = MEMORY_CLASS_NAME,
 	.dev_name = MEMORY_CLASS_NAME,
 	.online = memory_subsys_online,
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 4d588f4658c8..433897eecbdc 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -21,7 +21,7 @@
 #include <linux/swap.h>
 #include <linux/slab.h>
 
-static struct bus_type node_subsys = {
+static const struct bus_type node_subsys = {
 	.name = "node",
 	.dev_name = "node",
 };
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index da1777e39eaa..096871334cc7 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -2670,7 +2670,7 @@ static void genpd_release_dev(struct device *dev)
 	kfree(dev);
 }
 
-static struct bus_type genpd_bus_type = {
+static const struct bus_type genpd_bus_type = {
 	.name		= "genpd",
 };
 
diff --git a/drivers/base/soc.c b/drivers/base/soc.c
index c741d0845852..282c38aece0d 100644
--- a/drivers/base/soc.c
+++ b/drivers/base/soc.c
@@ -28,7 +28,7 @@ struct soc_device {
 	int soc_dev_num;
 };
 
-static struct bus_type soc_bus_type = {
+static const struct bus_type soc_bus_type = {
 	.name  = "soc",
 };
 static bool soc_bus_registered;
-- 
2.43.0