1 files changed, 15 insertions, 36 deletions

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index c0c5a43d9fb3..33c270a64db7 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -13,6 +13,7 @@
 #include <linux/device.h>
 #include <linux/module.h>
 #include <linux/errno.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/string.h>
 #include "base.h"
@@ -70,7 +71,7 @@ static ssize_t drv_attr_store(struct kobject *kobj, struct attribute *attr,
 	return ret;
 }
 
-static struct sysfs_ops driver_sysfs_ops = {
+static const struct sysfs_ops driver_sysfs_ops = {
 	.show	= drv_attr_show,
 	.store	= drv_attr_store,
 };
@@ -115,7 +116,7 @@ static ssize_t bus_attr_store(struct kobject *kobj, struct attribute *attr,
 	return ret;
 }
 
-static struct sysfs_ops bus_sysfs_ops = {
+static const struct sysfs_ops bus_sysfs_ops = {
 	.show	= bus_attr_show,
 	.store	= bus_attr_store,
 };
@@ -154,7 +155,7 @@ static int bus_uevent_filter(struct kset *kset, struct kobject *kobj)
 	return 0;
 }
 
-static struct kset_uevent_ops bus_uevent_ops = {
+static const struct kset_uevent_ops bus_uevent_ops = {
 	.filter = bus_uevent_filter,
 };
 
@@ -173,10 +174,10 @@ static ssize_t driver_unbind(struct device_driver *drv,
 	dev = bus_find_device_by_name(bus, NULL, buf);
 	if (dev && dev->driver == drv) {
 		if (dev->parent)	/* Needed for USB */
-			down(&dev->parent->sem);
+			device_lock(dev->parent);
 		device_release_driver(dev);
 		if (dev->parent)
-			up(&dev->parent->sem);
+			device_unlock(dev->parent);
 		err = count;
 	}
 	put_device(dev);
@@ -200,12 +201,12 @@ static ssize_t driver_bind(struct device_driver *drv,
 	dev = bus_find_device_by_name(bus, NULL, buf);
 	if (dev && dev->driver == NULL && driver_match_device(drv, dev)) {
 		if (dev->parent)	/* Needed for USB */
-			down(&dev->parent->sem);
-		down(&dev->sem);
+			device_lock(dev->parent);
+		device_lock(dev);
 		err = driver_probe_device(drv, dev);
-		up(&dev->sem);
+		device_unlock(dev);
 		if (dev->parent)
-			up(&dev->parent->sem);
+			device_unlock(dev->parent);
 
 		if (err > 0) {
 			/* success */
@@ -439,22 +440,6 @@ static void device_remove_attrs(struct bus_type *bus, struct device *dev)
 	}
 }
 
-#ifdef CONFIG_SYSFS_DEPRECATED
-static int make_deprecated_bus_links(struct device *dev)
-{
-	return sysfs_create_link(&dev->kobj,
-				 &dev->bus->p->subsys.kobj, "bus");
-}
-
-static void remove_deprecated_bus_links(struct device *dev)
-{
-	sysfs_remove_link(&dev->kobj, "bus");
-}
-#else
-static inline int make_deprecated_bus_links(struct device *dev) { return 0; }
-static inline void remove_deprecated_bus_links(struct device *dev) { }
-#endif
-
 /**
  * bus_add_device - add device to bus
  * @dev: device being added
@@ -481,15 +466,10 @@ int bus_add_device(struct device *dev)
 				&dev->bus->p->subsys.kobj, "subsystem");
 		if (error)
 			goto out_subsys;
-		error = make_deprecated_bus_links(dev);
-		if (error)
-			goto out_deprecated;
 		klist_add_tail(&dev->p->knode_bus, &bus->p->klist_devices);
 	}
 	return 0;
 
-out_deprecated:
-	sysfs_remove_link(&dev->kobj, "subsystem");
 out_subsys:
 	sysfs_remove_link(&bus->p->devices_kset->kobj, dev_name(dev));
 out_id:
@@ -529,7 +509,6 @@ void bus_remove_device(struct device *dev)
 {
 	if (dev->bus) {
 		sysfs_remove_link(&dev->kobj, "subsystem");
-		remove_deprecated_bus_links(dev);
 		sysfs_remove_link(&dev->bus->p->devices_kset->kobj,
 				  dev_name(dev));
 		device_remove_attrs(dev->bus, dev);
@@ -744,10 +723,10 @@ static int __must_check bus_rescan_devices_helper(struct device *dev,
 
 	if (!dev->driver) {
 		if (dev->parent)	/* Needed for USB */
-			down(&dev->parent->sem);
+			device_lock(dev->parent);
 		ret = device_attach(dev);
 		if (dev->parent)
-			up(&dev->parent->sem);
+			device_unlock(dev->parent);
 	}
 	return ret < 0 ? ret : 0;
 }
@@ -779,10 +758,10 @@ int device_reprobe(struct device *dev)
 {
 	if (dev->driver) {
 		if (dev->parent)        /* Needed for USB */
-			down(&dev->parent->sem);
+			device_lock(dev->parent);
 		device_release_driver(dev);
 		if (dev->parent)
-			up(&dev->parent->sem);
+			device_unlock(dev->parent);
 	}
 	return bus_rescan_devices_helper(dev, NULL);
 }
@@ -944,8 +923,8 @@ bus_devices_fail:
 	bus_remove_file(bus, &bus_attr_uevent);
 bus_uevent_fail:
 	kset_unregister(&bus->p->subsys);
-	kfree(bus->p);
 out:
+	kfree(bus->p);
 	bus->p = NULL;
 	return retval;
 }