From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Wed, 8 Feb 2023 11:13:18 +0000 (+0100)
Subject: driver core: bus: bus_get_kset() cleanup
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=beea7892d4339e50f15e5131d51a95503678fdf6;p=linux.git

driver core: bus: bus_get_kset() cleanup

Convert the bus_get_kset() function function to use bus_to_subsys() and
not use the back-pointer to the private structure.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230208111330.439504-10-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index b831173071ec8..105b6af924af3 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -956,7 +956,16 @@ void bus_notify(struct device *dev, enum bus_notifier_event value)
 
 struct kset *bus_get_kset(struct bus_type *bus)
 {
-	return &bus->p->subsys;
+	struct subsys_private *sp = bus_to_subsys(bus);
+	struct kset *kset;
+
+	if (!sp)
+		return NULL;
+
+	kset = &sp->subsys;
+	subsys_put(sp);
+
+	return kset;
 }
 EXPORT_SYMBOL_GPL(bus_get_kset);