linux-kernel - [PATCH 24/36] driver core: bus: constantify bus

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Date:   Mon, 13 Mar 2023 19:29:06 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     rafael@...nel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH 24/36] driver core: bus: constantify bus_register()

bus_register() is now safe to take a constant * to bus_type, so make
that change and mark the subsys_private bus_type * constant as well.

Cc: "Rafael J. Wysocki" <rafael@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/base/base.h        | 2 +-
 drivers/base/bus.c         | 2 +-
 include/linux/device/bus.h | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/base/base.h b/drivers/base/base.h
index f1034e27e651..09c6682d16b5 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -49,7 +49,7 @@ struct subsys_private {
 	struct klist klist_drivers;
 	struct blocking_notifier_head bus_notifier;
 	unsigned int drivers_autoprobe:1;
-	struct bus_type *bus;
+	const struct bus_type *bus;
 	struct device *dev_root;
 
 	struct kset glue_dirs;
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 819ab745fa9f..f739a2a79e59 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -841,7 +841,7 @@ static struct bus_attribute bus_attr_uevent = __ATTR(uevent, 0200, NULL,
  * infrastructure, then register the children subsystems it has:
  * the devices and drivers that belong to the subsystem.
  */
-int bus_register(struct bus_type *bus)
+int bus_register(const struct bus_type *bus)
 {
 	int retval;
 	struct subsys_private *priv;
diff --git a/include/linux/device/bus.h b/include/linux/device/bus.h
index 78c875386c06..c30c4748c170 100644
--- a/include/linux/device/bus.h
+++ b/include/linux/device/bus.h
@@ -110,7 +110,7 @@ struct bus_type {
 	bool need_parent_lock;
 };
 
-extern int __must_check bus_register(struct bus_type *bus);
+extern int __must_check bus_register(const struct bus_type *bus);
 
 extern void bus_unregister(const struct bus_type *bus);
 
-- 
2.39.2