[PATCH] Kobject: provide better warning messages when people do stupid things
Now that kobject_add() is used more than kobject_register() the kernel
wasn't always letting people know that they were doing something wrong.
This change fixes this.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/lib/kobject.c b/lib/kobject.c
index efe67fa..36668c8 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -194,6 +194,17 @@
unlink(kobj);
if (parent)
kobject_put(parent);
+
+ /* be noisy on error issues */
+ if (error == -EEXIST)
+ printk("kobject_add failed for %s with -EEXIST, "
+ "don't try to register things with the "
+ "same name in the same directory.\n",
+ kobject_name(kobj));
+ else
+ printk("kobject_add failed for %s (%d)\n",
+ kobject_name(kobj), error);
+ dump_stack();
}
return error;
@@ -207,18 +218,13 @@
int kobject_register(struct kobject * kobj)
{
- int error = 0;
+ int error = -EINVAL;
if (kobj) {
kobject_init(kobj);
error = kobject_add(kobj);
- if (error) {
- printk("kobject_register failed for %s (%d)\n",
- kobject_name(kobj),error);
- dump_stack();
- } else
+ if (!error)
kobject_uevent(kobj, KOBJ_ADD);
- } else
- error = -EINVAL;
+ }
return error;
}