diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
diff --git a/fs/dcache.c b/fs/dcache.c
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 3371629..f281cc6 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -678,8 +678,10 @@ static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
 	sd = sysfs_find_dirent(parent_sd, dentry->d_name.name);
 
 	/* no such entry */
-	if (!sd)
+	if (!sd) {
+		ret = ERR_PTR(-ENOENT);
 		goto out_unlock;
+	}
 
 	/* attach dentry and inode */
 	inode = sysfs_get_inode(sd);
@@ -781,6 +783,7 @@ int sysfs_rename_dir(struct kobject * kobj, const char *new_name)
 	old_dentry = sysfs_get_dentry(sd);
 	if (IS_ERR(old_dentry)) {
 		error = PTR_ERR(old_dentry);
+		old_dentry = NULL;
 		goto out;
 	}
 
@@ -848,6 +851,7 @@ int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent_kobj)
 	old_dentry = sysfs_get_dentry(sd);
 	if (IS_ERR(old_dentry)) {
 		error = PTR_ERR(old_dentry);
+		old_dentry = NULL;
 		goto out;
 	}
 	old_parent = old_dentry->d_parent;
@@ -855,6 +859,7 @@ int sysfs_move_dir(struct kobject *kobj, struct kobject *new_parent_kobj)
 	new_parent = sysfs_get_dentry(new_parent_sd);
 	if (IS_ERR(new_parent)) {
 		error = PTR_ERR(new_parent);
+		new_parent = NULL;
 		goto out;
 	}
 
@@ -878,7 +883,6 @@ again:
 	error = 0;
 	d_add(new_dentry, NULL);
 	d_move(old_dentry, new_dentry);
-	dput(new_dentry);
 
 	/* Remove from old parent's list and insert into new parent's list. */
 	sysfs_unlink_sibling(sd);
diff --git a/include/linux/dcache.h b/include/linux/dcache.h