diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 8fa8deab6449..4b7b4522b64f 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -1,10 +1,10 @@
 menu "Generic Driver Options"
 
-config UEVENT_HELPER_PATH
-	string "path to uevent helper"
-	default ""
+config UEVENT_HELPER
+	bool "Support for uevent helper"
+	default y
 	help
-	  Path to uevent helper program forked by the kernel for
+	  The uevent helper program is forked by the kernel for
 	  every uevent.
 	  Before the switch to the netlink-based uevent source, this was
 	  used to hook hotplug scripts into kernel device events. It
@@ -15,8 +15,13 @@ config UEVENT_HELPER_PATH
 	  that it creates a high system load, or on smaller systems
 	  it is known to create out-of-memory situations during bootup.
 
-	  To disable user space helper program execution at early boot
-	  time specify an empty string here. This setting can be altered
+config UEVENT_HELPER_PATH
+	string "path to uevent helper"
+	depends on UEVENT_HELPER
+	default ""
+	help
+	  To disable user space helper program execution at by default
+	  specify an empty string here. This setting can still be altered
 	  via /proc/sys/kernel/hotplug or via /sys/kernel/uevent_helper
 	  later at runtime.
 
diff --git a/drivers/base/base.h b/drivers/base/base.h
index 24f424249d9b..251c5d30f963 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -63,8 +63,6 @@ struct driver_private {
  *	binding of drivers which were unable to get all the resources needed by
  *	the device; typically because it depends on another driver getting
  *	probed first.
- * @driver_data - private pointer for driver specific info.  Will turn into a
- * list soon.
  * @device - pointer back to the struct class that this structure is
  * associated with.
  *
@@ -76,7 +74,6 @@ struct device_private {
 	struct klist_node knode_driver;
 	struct klist_node knode_bus;
 	struct list_head deferred_probe;
-	void *driver_data;
 	struct device *device;
 };
 #define to_device_private_parent(obj)	\
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 62ec61e8f84a..e4ffbcf2f519 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -587,29 +587,3 @@ void driver_detach(struct device_driver *drv)
 		put_device(dev);
 	}
 }
-
-/*
- * These exports can't be _GPL due to .h files using this within them, and it
- * might break something that was previously working...
- */
-void *dev_get_drvdata(const struct device *dev)
-{
-	if (dev && dev->p)
-		return dev->p->driver_data;
-	return NULL;
-}
-EXPORT_SYMBOL(dev_get_drvdata);
-
-int dev_set_drvdata(struct device *dev, void *data)
-{
-	int error;
-
-	if (!dev->p) {
-		error = device_private_init(dev);
-		if (error)
-			return error;
-	}
-	dev->p->driver_data = data;
-	return 0;
-}
-EXPORT_SYMBOL(dev_set_drvdata);
diff --git a/drivers/crypto/nx/nx-842.c b/drivers/crypto/nx/nx-842.c
index 1e5481d88a26..5ce8b5765121 100644
--- a/drivers/crypto/nx/nx-842.c
+++ b/drivers/crypto/nx/nx-842.c
@@ -1197,12 +1197,7 @@ static int __init nx842_probe(struct vio_dev *viodev,
 	}
 
 	rcu_read_lock();
-	if (dev_set_drvdata(&viodev->dev, rcu_dereference(devdata))) {
-		rcu_read_unlock();
-		dev_err(&viodev->dev, "failed to set driver data for device\n");
-		ret = -1;
-		goto error;
-	}
+	dev_set_drvdata(&viodev->dev, rcu_dereference(devdata));
 	rcu_read_unlock();
 
 	if (sysfs_create_group(&viodev->dev.kobj, &nx842_attribute_group)) {
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 2ca0744b0a45..685f9263cfee 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -542,12 +542,7 @@ static int exynos_sysmmu_probe(struct platform_device *pdev)
 		goto err_alloc;
 	}
 
-	ret = dev_set_drvdata(dev, data);
-	if (ret) {
-		dev_dbg(dev, "Unabled to initialize driver data\n");
-		goto err_init;
-	}
-
+	dev_set_drvdata(dev, data);
 	data->nsfrs = pdev->num_resources / 2;
 	data->sfrbases = kmalloc(sizeof(*data->sfrbases) * data->nsfrs,
 								GFP_KERNEL);
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 512f479d8a50..f018d8d0f975 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -349,7 +349,6 @@ struct vfio_device *vfio_group_create_device(struct vfio_group *group,
 					     void *device_data)
 {
 	struct vfio_device *device;
-	int ret;
 
 	device = kzalloc(sizeof(*device), GFP_KERNEL);
 	if (!device)
@@ -360,12 +359,7 @@ struct vfio_device *vfio_group_create_device(struct vfio_group *group,
 	device->group = group;
 	device->ops = ops;
 	device->device_data = device_data;
-
-	ret = dev_set_drvdata(dev, device);
-	if (ret) {
-		kfree(device);
-		return ERR_PTR(ret);
-	}
+	dev_set_drvdata(dev, device);
 
 	/* No need to get group_lock, caller has group reference */
 	vfio_group_get(group);
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
index ac127cd008bf..a693f5b01ae6 100644
--- a/fs/kernfs/dir.c
+++ b/fs/kernfs/dir.c
@@ -714,6 +714,7 @@ struct kernfs_root *kernfs_create_root(struct kernfs_syscall_ops *scops,
 		return ERR_PTR(-ENOMEM);
 
 	ida_init(&root->ino_ida);
+	INIT_LIST_HEAD(&root->supers);
 
 	kn = __kernfs_new_node(root, "", S_IFDIR | S_IRUGO | S_IXUGO,
 			       KERNFS_DIR);
diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index 5e9a80cfc3d8..e3d37f607f97 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -14,6 +14,7 @@
 #include <linux/poll.h>
 #include <linux/pagemap.h>
 #include <linux/sched.h>
+#include <linux/fsnotify.h>
 
 #include "kernfs-internal.h"
 
@@ -790,20 +791,48 @@ static unsigned int kernfs_fop_poll(struct file *filp, poll_table *wait)
  */
 void kernfs_notify(struct kernfs_node *kn)
 {
+	struct kernfs_root *root = kernfs_root(kn);
 	struct kernfs_open_node *on;
+	struct kernfs_super_info *info;
 	unsigned long flags;
 
+	if (WARN_ON(kernfs_type(kn) != KERNFS_FILE))
+		return;
+
+	/* kick poll */
 	spin_lock_irqsave(&kernfs_open_node_lock, flags);
 
-	if (!WARN_ON(kernfs_type(kn) != KERNFS_FILE)) {
-		on = kn->attr.open;
-		if (on) {
-			atomic_inc(&on->event);
-			wake_up_interruptible(&on->poll);
-		}
+	on = kn->attr.open;
+	if (on) {
+		atomic_inc(&on->event);
+		wake_up_interruptible(&on->poll);
 	}
 
 	spin_unlock_irqrestore(&kernfs_open_node_lock, flags);
+
+	/* kick fsnotify */
+	mutex_lock(&kernfs_mutex);
+
+	list_for_each_entry(info, &root->supers, node) {
+		struct inode *inode;
+		struct dentry *dentry;
+
+		inode = ilookup(info->sb, kn->ino);
+		if (!inode)
+			continue;
+
+		dentry = d_find_any_alias(inode);
+		if (dentry) {
+			fsnotify_parent(NULL, dentry, FS_MODIFY);
+			fsnotify(inode, FS_MODIFY, inode, FSNOTIFY_EVENT_INODE,
+				 NULL, 0);
+			dput(dentry);
+		}
+
+		iput(inode);
+	}
+
+	mutex_unlock(&kernfs_mutex);
 }
 EXPORT_SYMBOL_GPL(kernfs_notify);
 
diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h
index 8be13b2a079b..dc84a3ef9ca2 100644
--- a/fs/kernfs/kernfs-internal.h
+++ b/fs/kernfs/kernfs-internal.h
@@ -49,6 +49,8 @@ static inline struct kernfs_root *kernfs_root(struct kernfs_node *kn)
  * mount.c
  */
 struct kernfs_super_info {
+	struct super_block	*sb;
+
 	/*
 	 * The root associated with this super_block.  Each super_block is
 	 * identified by the root and ns it's associated with.
@@ -62,6 +64,9 @@ struct kernfs_super_info {
 	 * an array and compare kernfs_node tag against every entry.
 	 */
 	const void		*ns;
+
+	/* anchored at kernfs_root->supers, protected by kernfs_mutex */
+	struct list_head	node;
 };
 #define kernfs_info(SB) ((struct kernfs_super_info *)(SB->s_fs_info))
 
diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c
index 6a5f04ac8704..d171b98a6cdd 100644
--- a/fs/kernfs/mount.c
+++ b/fs/kernfs/mount.c
@@ -62,15 +62,16 @@ struct kernfs_root *kernfs_root_from_sb(struct super_block *sb)
 	return NULL;
 }
 
-static int kernfs_fill_super(struct super_block *sb)
+static int kernfs_fill_super(struct super_block *sb, unsigned long magic)
 {
 	struct kernfs_super_info *info = kernfs_info(sb);
 	struct inode *inode;
 	struct dentry *root;
 
+	info->sb = sb;
 	sb->s_blocksize = PAGE_CACHE_SIZE;
 	sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
-	sb->s_magic = SYSFS_MAGIC;
+	sb->s_magic = magic;
 	sb->s_op = &kernfs_sops;
 	sb->s_time_gran = 1;
 
@@ -131,6 +132,7 @@ const void *kernfs_super_ns(struct super_block *sb)
  * @fs_type: file_system_type of the fs being mounted
  * @flags: mount flags specified for the mount
  * @root: kernfs_root of the hierarchy being mounted
+ * @magic: file system specific magic number
  * @new_sb_created: tell the caller if we allocated a new superblock
  * @ns: optional namespace tag of the mount
  *
@@ -142,8 +144,8 @@ const void *kernfs_super_ns(struct super_block *sb)
  * The return value can be passed to the vfs layer verbatim.
  */
 struct dentry *kernfs_mount_ns(struct file_system_type *fs_type, int flags,
-			       struct kernfs_root *root, bool *new_sb_created,
-			       const void *ns)
+				struct kernfs_root *root, unsigned long magic,
+				bool *new_sb_created, const void *ns)
 {
 	struct super_block *sb;
 	struct kernfs_super_info *info;
@@ -166,12 +168,18 @@ struct dentry *kernfs_mount_ns(struct file_system_type *fs_type, int flags,
 		*new_sb_created = !sb->s_root;
 
 	if (!sb->s_root) {
-		error = kernfs_fill_super(sb);
+		struct kernfs_super_info *info = kernfs_info(sb);
+
+		error = kernfs_fill_super(sb, magic);
 		if (error) {
 			deactivate_locked_super(sb);
 			return ERR_PTR(error);
 		}
 		sb->s_flags |= MS_ACTIVE;
+
+		mutex_lock(&kernfs_mutex);
+		list_add(&info->node, &root->supers);
+		mutex_unlock(&kernfs_mutex);
 	}
 
 	return dget(sb->s_root);
@@ -190,6 +198,10 @@ void kernfs_kill_sb(struct super_block *sb)
 	struct kernfs_super_info *info = kernfs_info(sb);
 	struct kernfs_node *root_kn = sb->s_root->d_fsdata;
 
+	mutex_lock(&kernfs_mutex);
+	list_del(&info->node);
+	mutex_unlock(&kernfs_mutex);
+
 	/*
 	 * Remove the superblock from fs_supers/s_instances
 	 * so we can't find it, before freeing kernfs_super_info.
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index aa0406895b53..7d2a860ba788 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -18,7 +18,7 @@
 #include "sysfs.h"
 
 
-static void remove_files(struct kernfs_node *parent, struct kobject *kobj,
+static void remove_files(struct kernfs_node *parent,
 			 const struct attribute_group *grp)
 {
 	struct attribute *const *attr;
@@ -29,7 +29,7 @@ static void remove_files(struct kernfs_node *parent, struct kobject *kobj,
 			kernfs_remove_by_name(parent, (*attr)->name);
 	if (grp->bin_attrs)
 		for (bin_attr = grp->bin_attrs; *bin_attr; bin_attr++)
-			sysfs_remove_bin_file(kobj, *bin_attr);
+			kernfs_remove_by_name(parent, (*bin_attr)->attr.name);
 }
 
 static int create_files(struct kernfs_node *parent, struct kobject *kobj,
@@ -62,7 +62,7 @@ static int create_files(struct kernfs_node *parent, struct kobject *kobj,
 				break;
 		}
 		if (error) {
-			remove_files(parent, kobj, grp);
+			remove_files(parent, grp);
 			goto exit;
 		}
 	}
@@ -79,7 +79,7 @@ static int create_files(struct kernfs_node *parent, struct kobject *kobj,
 				break;
 		}
 		if (error)
-			remove_files(parent, kobj, grp);
+			remove_files(parent, grp);
 	}
 exit:
 	return error;
@@ -224,7 +224,7 @@ void sysfs_remove_group(struct kobject *kobj,
 		kernfs_get(kn);
 	}
 
-	remove_files(kn, kobj, grp);
+	remove_files(kn, grp);
 	if (grp->name)
 		kernfs_remove(kn);
 
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index 8794423f7efb..8a49486bf30c 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -13,6 +13,7 @@
 #define DEBUG
 
 #include <linux/fs.h>
+#include <linux/magic.h>
 #include <linux/mount.h>
 #include <linux/init.h>
 #include <linux/user_namespace.h>
@@ -38,7 +39,8 @@ static struct dentry *sysfs_mount(struct file_system_type *fs_type,
 	}
 
 	ns = kobj_ns_grab_current(KOBJ_NS_TYPE_NET);
-	root = kernfs_mount_ns(fs_type, flags, sysfs_root, &new_sb, ns);
+	root = kernfs_mount_ns(fs_type, flags, sysfs_root,
+				SYSFS_MAGIC, &new_sb, ns);
 	if (IS_ERR(root) || !new_sb)
 		kobj_ns_drop(KOBJ_NS_TYPE_NET, ns);
 	return root;
diff --git a/include/linux/device.h b/include/linux/device.h
index d1d1c055b48e..1b18c886445c 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -673,6 +673,7 @@ struct acpi_dev_node {
  * 		variants, which GPIO pins act in what additional roles, and so
  * 		on.  This shrinks the "Board Support Packages" (BSPs) and
  * 		minimizes board-specific #ifdefs in drivers.
+ * @driver_data: Private pointer for driver specific info.
  * @power:	For device power management.
  * 		See Documentation/power/devices.txt for details.
  * @pm_domain:	Provide callbacks that are executed during system suspend,
@@ -734,6 +735,8 @@ struct device {
 					   device */
 	void		*platform_data;	/* Platform specific data, device
 					   core doesn't touch it */
+	void		*driver_data;	/* Driver data, set and get with
+					   dev_set/get_drvdata */
 	struct dev_pm_info	power;
 	struct dev_pm_domain	*pm_domain;
 
@@ -823,6 +826,16 @@ static inline void set_dev_node(struct device *dev, int node)
 }
 #endif
 
+static inline void *dev_get_drvdata(const struct device *dev)
+{
+	return dev->driver_data;
+}
+
+static inline void dev_set_drvdata(struct device *dev, void *data)
+{
+	dev->driver_data = data;
+}
+
 static inline struct pm_subsys_data *dev_to_psd(struct device *dev)
 {
 	return dev ? dev->power.subsys_data : NULL;
@@ -907,8 +920,6 @@ extern int device_move(struct device *dev, struct device *new_parent,
 extern const char *device_get_devnode(struct device *dev,
 				      umode_t *mode, kuid_t *uid, kgid_t *gid,
 				      const char **tmp);
-extern void *dev_get_drvdata(const struct device *dev);
-extern int dev_set_drvdata(struct device *dev, void *data);
 
 static inline bool device_supports_offline(struct device *dev)
 {
diff --git a/include/linux/init.h b/include/linux/init.h
index a3ba27076342..2df8e8dd10a4 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -297,16 +297,28 @@ void __init parse_early_options(char *cmdline);
 
 #else /* MODULE */
 
-/* Don't use these in loadable modules, but some people do... */
+/*
+ * In most cases loadable modules do not need custom
+ * initcall levels. There are still some valid cases where
+ * a driver may be needed early if built in, and does not
+ * matter when built as a loadable module. Like bus
+ * snooping debug drivers.
+ */
 #define early_initcall(fn)		module_init(fn)
 #define core_initcall(fn)		module_init(fn)
+#define core_initcall_sync(fn)		module_init(fn)
 #define postcore_initcall(fn)		module_init(fn)
+#define postcore_initcall_sync(fn)	module_init(fn)
 #define arch_initcall(fn)		module_init(fn)
 #define subsys_initcall(fn)		module_init(fn)
+#define subsys_initcall_sync(fn)	module_init(fn)
 #define fs_initcall(fn)			module_init(fn)
+#define fs_initcall_sync(fn)		module_init(fn)
 #define rootfs_initcall(fn)		module_init(fn)
 #define device_initcall(fn)		module_init(fn)
+#define device_initcall_sync(fn)	module_init(fn)
 #define late_initcall(fn)		module_init(fn)
+#define late_initcall_sync(fn)		module_init(fn)
 
 #define console_initcall(fn)		module_init(fn)
 #define security_initcall(fn)		module_init(fn)
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h
index ca1be5c9136c..17aa1cce6f8e 100644
--- a/include/linux/kernfs.h
+++ b/include/linux/kernfs.h
@@ -161,6 +161,10 @@ struct kernfs_root {
 	/* private fields, do not use outside kernfs proper */
 	struct ida		ino_ida;
 	struct kernfs_syscall_ops *syscall_ops;
+
+	/* list of kernfs_super_info of this root, protected by kernfs_mutex */
+	struct list_head	supers;
+
 	wait_queue_head_t	deactivate_waitq;
 };
 
@@ -297,8 +301,8 @@ void kernfs_notify(struct kernfs_node *kn);
 
 const void *kernfs_super_ns(struct super_block *sb);
 struct dentry *kernfs_mount_ns(struct file_system_type *fs_type, int flags,
-			       struct kernfs_root *root, bool *new_sb_created,
-			       const void *ns);
+			       struct kernfs_root *root, unsigned long magic,
+			       bool *new_sb_created, const void *ns);
 void kernfs_kill_sb(struct super_block *sb);
 
 void kernfs_init(void);
@@ -391,7 +395,8 @@ static inline const void *kernfs_super_ns(struct super_block *sb)
 
 static inline struct dentry *
 kernfs_mount_ns(struct file_system_type *fs_type, int flags,
-		struct kernfs_root *root, bool *new_sb_created, const void *ns)
+		struct kernfs_root *root, unsigned long magic,
+		bool *new_sb_created, const void *ns)
 { return ERR_PTR(-ENOSYS); }
 
 static inline void kernfs_kill_sb(struct super_block *sb) { }
@@ -449,9 +454,11 @@ static inline int kernfs_rename(struct kernfs_node *kn,
 
 static inline struct dentry *
 kernfs_mount(struct file_system_type *fs_type, int flags,
-	     struct kernfs_root *root, bool *new_sb_created)
+		struct kernfs_root *root, unsigned long magic,
+		bool *new_sb_created)
 {
-	return kernfs_mount_ns(fs_type, flags, root, new_sb_created, NULL);
+	return kernfs_mount_ns(fs_type, flags, root,
+				magic, new_sb_created, NULL);
 }
 
 #endif	/* __LINUX_KERNFS_H */
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index f896a33e8341..2d61b909f414 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -32,8 +32,10 @@
 #define UEVENT_NUM_ENVP			32	/* number of env pointers */
 #define UEVENT_BUFFER_SIZE		2048	/* buffer for the variables */
 
+#ifdef CONFIG_UEVENT_HELPER
 /* path to the userspace helper executed on an event */
 extern char uevent_helper[];
+#endif
 
 /* counter to tag the uevent, read only except for the kobject core */
 extern u64 uevent_seqnum;
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 5ffaa3443712..f97d0dbb59fa 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -437,7 +437,7 @@ static inline int __must_check sysfs_create_file(struct kobject *kobj,
 static inline void sysfs_remove_file(struct kobject *kobj,
 				     const struct attribute *attr)
 {
-	return sysfs_remove_file_ns(kobj, attr, NULL);
+	sysfs_remove_file_ns(kobj, attr, NULL);
 }
 
 static inline int sysfs_rename_link(struct kobject *kobj, struct kobject *target,
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 3f1ca934a237..ceee0c54c6a4 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -33,6 +33,7 @@
 #include <linux/init_task.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
+#include <linux/magic.h>
 #include <linux/mm.h>
 #include <linux/mutex.h>
 #include <linux/mount.h>
@@ -1604,7 +1605,8 @@ static struct dentry *cgroup_mount(struct file_system_type *fs_type,
 	if (ret)
 		return ERR_PTR(ret);
 
-	dentry = kernfs_mount(fs_type, flags, root->kf_root, &new_sb);
+	dentry = kernfs_mount(fs_type, flags, root->kf_root,
+				CGROUP_SUPER_MAGIC, &new_sb);
 	if (IS_ERR(dentry) || !new_sb)
 		cgroup_put(&root->cgrp);
 	return dentry;
diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
index 2495a9b14ac8..6683ccef9fff 100644
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -37,6 +37,7 @@ static ssize_t uevent_seqnum_show(struct kobject *kobj,
 }
 KERNEL_ATTR_RO(uevent_seqnum);
 
+#ifdef CONFIG_UEVENT_HELPER
 /* uevent helper program, used during early boot */
 static ssize_t uevent_helper_show(struct kobject *kobj,
 				  struct kobj_attribute *attr, char *buf)
@@ -56,7 +57,7 @@ static ssize_t uevent_helper_store(struct kobject *kobj,
 	return count;
 }
 KERNEL_ATTR_RW(uevent_helper);
-
+#endif
 
 #ifdef CONFIG_PROFILING
 static ssize_t profiling_show(struct kobject *kobj,
@@ -189,7 +190,9 @@ EXPORT_SYMBOL_GPL(kernel_kobj);
 static struct attribute * kernel_attrs[] = {
 	&fscaps_attr.attr,
 	&uevent_seqnum_attr.attr,
+#ifdef CONFIG_UEVENT_HELPER
 	&uevent_helper_attr.attr,
+#endif
 #ifdef CONFIG_PROFILING
 	&profiling_attr.attr,
 #endif
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 74f5b580fe34..bc966a8ffc3e 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -643,7 +643,7 @@ static struct ctl_table kern_table[] = {
 		.extra2		= &one,
 	},
 #endif
-
+#ifdef CONFIG_UEVENT_HELPER
 	{
 		.procname	= "hotplug",
 		.data		= &uevent_helper,
@@ -651,7 +651,7 @@ static struct ctl_table kern_table[] = {
 		.mode		= 0644,
 		.proc_handler	= proc_dostring,
 	},
-
+#endif
 #ifdef CONFIG_CHR_DEV_SG
 	{
 		.procname	= "sg-big-buff",
diff --git a/lib/devres.c b/lib/devres.c
index 2f16c133fd36..f562bf6ff71d 100644
--- a/lib/devres.c
+++ b/lib/devres.c
@@ -157,12 +157,12 @@ EXPORT_SYMBOL(devm_ioremap_resource);
  *	if (!base)
  *		return -EADDRNOTAVAIL;
  */
-void __iomem *devm_request_and_ioremap(struct device *device,
+void __iomem *devm_request_and_ioremap(struct device *dev,
 				       struct resource *res)
 {
 	void __iomem *dest_ptr;
 
-	dest_ptr = devm_ioremap_resource(device, res);
+	dest_ptr = devm_ioremap_resource(dev, res);
 	if (IS_ERR(dest_ptr))
 		return NULL;
 
@@ -194,7 +194,7 @@ static int devm_ioport_map_match(struct device *dev, void *res,
  * Managed ioport_map().  Map is automatically unmapped on driver
  * detach.
  */
-void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
+void __iomem *devm_ioport_map(struct device *dev, unsigned long port,
 			       unsigned int nr)
 {
 	void __iomem **ptr, *addr;
@@ -265,7 +265,7 @@ static void pcim_iomap_release(struct device *gendev, void *res)
  * be safely called without context and guaranteed to succed once
  * allocated.
  */
-void __iomem * const * pcim_iomap_table(struct pci_dev *pdev)
+void __iomem * const *pcim_iomap_table(struct pci_dev *pdev)
 {
 	struct pcim_iomap_devres *dr, *new_dr;
 
@@ -290,7 +290,7 @@ EXPORT_SYMBOL(pcim_iomap_table);
  * Managed pci_iomap().  Map is automatically unmapped on driver
  * detach.
  */
-void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen)
+void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen)
 {
 	void __iomem **tbl;
 
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 4e3bd71bd949..9ebf9e20de53 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -29,7 +29,9 @@
 
 
 u64 uevent_seqnum;
+#ifdef CONFIG_UEVENT_HELPER
 char uevent_helper[UEVENT_HELPER_PATH_LEN] = CONFIG_UEVENT_HELPER_PATH;
+#endif
 #ifdef CONFIG_NET
 struct uevent_sock {
 	struct list_head list;
@@ -109,6 +111,7 @@ static int kobj_bcast_filter(struct sock *dsk, struct sk_buff *skb, void *data)
 }
 #endif
 
+#ifdef CONFIG_UEVENT_HELPER
 static int kobj_usermode_filter(struct kobject *kobj)
 {
 	const struct kobj_ns_type_operations *ops;
@@ -147,6 +150,7 @@ static void cleanup_uevent_env(struct subprocess_info *info)
 {
 	kfree(info->data);
 }
+#endif
 
 /**
  * kobject_uevent_env - send an uevent with environmental data
@@ -323,6 +327,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 #endif
 	mutex_unlock(&uevent_sock_mutex);
 
+#ifdef CONFIG_UEVENT_HELPER
 	/* call uevent_helper, usually only enabled during early boot */
 	if (uevent_helper[0] && !kobj_usermode_filter(kobj)) {
 		struct subprocess_info *info;
@@ -347,6 +352,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 			env = NULL;	/* freed by cleanup_uevent_env */
 		}
 	}
+#endif
 
 exit:
 	kfree(devpath);