Driver-Core: require valid action string in uevent trigger

No longer fall back to "add" and warn, but always require a valid
action-string written to the "uevent" file.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/base/core.c

@@ -306,15 +306,10 @@ static ssize_t store_uevent(struct device *dev, struct device_attribute *attr,
 {
 	enum kobject_action action;
 
-	if (kobject_action_type(buf, count, &action) == 0) {
+	if (kobject_action_type(buf, count, &action) == 0)
 		kobject_uevent(&dev->kobj, action);
-		goto out;
-	}
-
-	dev_err(dev, "uevent: unsupported action-string; this will "
-		     "be ignored in a future kernel version\n");
-	kobject_uevent(&dev->kobj, KOBJ_ADD);
-out:
+	else
+		dev_err(dev, "uevent: unknown action-string\n");
 	return count;
 }