Kobject: auto-cleanup on final unref

[linux-2.6-omap-h63xx.git] / lib / kobject_uevent.c

diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 2e4eae5b0824400de9f6eeafb5483c3fde8f5b0c..b021e67c42942ab70b5657fc1ebba4449d636f7a 100644 (file)
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -98,7 +98,8 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
        int i = 0;
        int retval = 0;
 
-       pr_debug("%s\n", __FUNCTION__);
+       pr_debug("kobject: '%s' (%p): %s\n",
+                kobject_name(kobj), kobj, __FUNCTION__);
 
        /* search the kset we belong to */
        top_kobj = kobj;
@@ -106,7 +107,9 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
                top_kobj = top_kobj->parent;
 
        if (!top_kobj->kset) {
-               pr_debug("kobject attempted to send uevent without kset!\n");
+               pr_debug("kobject: '%s' (%p): %s: attempted to send uevent "
+                        "without kset!\n", kobject_name(kobj), kobj,
+                        __FUNCTION__);
                return -EINVAL;
        }
 
@@ -116,7 +119,9 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
        /* skip the event, if the filter returns zero. */
        if (uevent_ops && uevent_ops->filter)
                if (!uevent_ops->filter(kset, kobj)) {
-                       pr_debug("kobject filter function caused the event to drop!\n");
+                       pr_debug("kobject: '%s' (%p): %s: filter function "
+                                "caused the event to drop!\n",
+                                kobject_name(kobj), kobj, __FUNCTION__);
                        return 0;
                }
 
@@ -126,7 +131,9 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
        else
                subsystem = kobject_name(&kset->kobj);
        if (!subsystem) {
-               pr_debug("unset subsytem caused the event to drop!\n");
+               pr_debug("kobject: '%s' (%p): %s: unset subsystem caused the "
+                        "event to drop!\n", kobject_name(kobj), kobj,
+                        __FUNCTION__);
                return 0;
        }
 
@@ -166,12 +173,24 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
        if (uevent_ops && uevent_ops->uevent) {
                retval = uevent_ops->uevent(kset, kobj, env);
                if (retval) {
-                       pr_debug ("%s - uevent() returned %d\n",
-                                 __FUNCTION__, retval);
+                       pr_debug("kobject: '%s' (%p): %s: uevent() returned "
+                                "%d\n", kobject_name(kobj), kobj,
+                                __FUNCTION__, retval);
                        goto exit;
                }
        }
 
+       /*
+        * Mark "add" and "remove" events in the object to ensure proper
+        * events to userspace during automatic cleanup. If the object did
+        * send an "add" event, "remove" will automatically generated by
+        * the core, if not already done by the caller.
+        */
+       if (action == KOBJ_ADD)
+               kobj->state_add_uevent_sent = 1;
+       else if (action == KOBJ_REMOVE)
+               kobj->state_remove_uevent_sent = 1;
+
        /* we will send an event, so request a new sequence number */
        spin_lock(&sequence_lock);
        seq = ++uevent_seqnum;