linux-kernel - [PATCH 20/54] kset: convert /sys/devices to use kset

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Date:	Fri,  2 Nov 2007 16:58:58 -0700
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Kay Sievers <kay.sievers@...y.org>
Subject: [PATCH 20/54] kset: convert /sys/devices to use kset_create

Dynamically create the kset instead of declaring it statically.  We also
rename devices_subsys to devices_kset to catch all users of the
variable.

Cc: Kay Sievers <kay.sievers@...y.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/base/base.h           |    2 +-
 drivers/base/core.c           |   17 +++++++++--------
 drivers/base/power/shutdown.c |    2 +-
 drivers/base/sys.c            |    4 +---
 4 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/drivers/base/base.h b/drivers/base/base.h
index 10b2fb6..7e309a4 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -44,4 +44,4 @@ extern char *make_class_name(const char *name, struct kobject *kobj);
 
 extern int devres_release_all(struct device *dev);
 
-extern struct kset devices_subsys;
+extern struct kset *devices_kset;
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 161ea6e..80188ec 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -401,11 +401,8 @@ static ssize_t show_dev(struct device *dev, struct device_attribute *attr,
 static struct device_attribute devt_attr =
 	__ATTR(dev, S_IRUGO, show_dev, NULL);
 
-/*
- *	devices_subsys - structure to be registered with kobject core.
- */
-
-decl_subsys(devices, &device_uevent_ops);
+/* kset to create /sys/devices/  */
+struct kset *devices_kset;
 
 
 /**
@@ -525,7 +522,7 @@ static void klist_children_put(struct klist_node *n)
 
 void device_initialize(struct device *dev)
 {
-	dev->kobj.kset = &devices_subsys;
+	dev->kobj.kset = devices_kset;
 	dev->kobj.ktype = &device_ktype;
 	kobject_init(&dev->kobj);
 	klist_init(&dev->klist_children, klist_children_get,
@@ -562,7 +559,7 @@ static struct kobject *virtual_device_parent(struct device *dev)
 	static struct kobject *virtual_dir = NULL;
 
 	if (!virtual_dir)
-		virtual_dir = kobject_add_dir(&devices_subsys.kobj, "virtual");
+		virtual_dir = kobject_add_dir(&devices_kset->kobj, "virtual");
 
 	return virtual_dir;
 }
@@ -1072,7 +1069,11 @@ struct device * device_find_child(struct device *parent, void *data,
 
 int __init devices_init(void)
 {
-	return subsystem_register(&devices_subsys);
+	devices_kset = kset_create_and_register("devices", &device_uevent_ops,
+						NULL, NULL);
+	if (IS_ERR(devices_kset))
+		return PTR_ERR(devices_kset);
+	return 0;
 }
 
 EXPORT_SYMBOL_GPL(device_for_each_child);
diff --git a/drivers/base/power/shutdown.c b/drivers/base/power/shutdown.c
index 56e8eaa..f51cbc1 100644
--- a/drivers/base/power/shutdown.c
+++ b/drivers/base/power/shutdown.c
@@ -34,7 +34,7 @@ void device_shutdown(void)
 {
 	struct device * dev, *devn;
 
-	list_for_each_entry_safe_reverse(dev, devn, &devices_subsys.list,
+	list_for_each_entry_safe_reverse(dev, devn, &devices_kset->list,
 				kobj.entry) {
 		if (dev->bus && dev->bus->shutdown) {
 			dev_dbg(dev, "shutdown\n");
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index 7cf19fc..7693c95 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -25,8 +25,6 @@
 
 #include "base.h"
 
-extern struct kset devices_subsys;
-
 #define to_sysdev(k) container_of(k, struct sys_device, kobj)
 #define to_sysdev_attr(a) container_of(a, struct sysdev_attribute, attr)
 
@@ -459,7 +457,7 @@ int sysdev_resume(void)
 
 int __init system_bus_init(void)
 {
-	system_subsys.kobj.parent = &devices_subsys.kobj;
+	system_subsys.kobj.parent = &devices_kset->kobj;
 	return subsystem_register(&system_subsys);
 }
 
-- 
1.5.3.4

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