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Diffstat (limited to 'lib/kobject_uevent.c')
-rw-r--r--lib/kobject_uevent.c28
1 files changed, 13 insertions, 15 deletions
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 84272ed77f0..12e311dc664 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -42,10 +42,6 @@ static char *action_to_string(enum kobject_action action)
return "remove";
case KOBJ_CHANGE:
return "change";
- case KOBJ_MOUNT:
- return "mount";
- case KOBJ_UMOUNT:
- return "umount";
case KOBJ_OFFLINE:
return "offline";
case KOBJ_ONLINE:
@@ -95,10 +91,8 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
/* search the kset we belong to */
top_kobj = kobj;
- if (!top_kobj->kset && top_kobj->parent) {
- do {
- top_kobj = top_kobj->parent;
- } while (!top_kobj->kset && top_kobj->parent);
+ while (!top_kobj->kset && top_kobj->parent) {
+ top_kobj = top_kobj->parent;
}
if (!top_kobj->kset) {
pr_debug("kobject attempted to send uevent without kset!\n");
@@ -115,6 +109,16 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
return 0;
}
+ /* originating subsystem */
+ if (uevent_ops && uevent_ops->name)
+ subsystem = uevent_ops->name(kset, kobj);
+ else
+ subsystem = kobject_name(&kset->kobj);
+ if (!subsystem) {
+ pr_debug("unset subsytem caused the event to drop!\n");
+ return 0;
+ }
+
/* environment index */
envp = kzalloc(NUM_ENVP * sizeof (char *), GFP_KERNEL);
if (!envp)
@@ -134,12 +138,6 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
goto exit;
}
- /* originating subsystem */
- if (uevent_ops && uevent_ops->name)
- subsystem = uevent_ops->name(kset, kobj);
- else
- subsystem = kobject_name(&kset->kobj);
-
/* event environemnt for helper process only */
envp[i++] = "HOME=/";
envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
@@ -293,7 +291,7 @@ EXPORT_SYMBOL_GPL(add_uevent_var);
static int __init kobject_uevent_init(void)
{
uevent_sock = netlink_kernel_create(NETLINK_KOBJECT_UEVENT, 1, NULL,
- THIS_MODULE);
+ NULL, THIS_MODULE);
if (!uevent_sock) {
printk(KERN_ERR