[PATCH] EDAC: kobject_init/kobject_put fixes
- Remove calls to kobject_init(). These are unnecessary because
kobject_register() calls kobject_init().
- Remove extra calls to kobject_put(). When we call
kobject_unregister(), this releases our reference to the kobject.
The extra calls to kobject_put() may cause the reference count to
drop to 0 while a kobject is still in use.
Signed-off-by: David S. Peterson <dsp@llnl.gov>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index d37a4c4..e6ecc7d 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -278,8 +278,6 @@
if (!err) {
/* Init the MC's kobject */
memset(&edac_memctrl_kobj, 0, sizeof (edac_memctrl_kobj));
- kobject_init(&edac_memctrl_kobj);
-
edac_memctrl_kobj.parent = &edac_class.kset.kobj;
edac_memctrl_kobj.ktype = &ktype_memctrl;
@@ -314,9 +312,6 @@
/* Unregister the MC's kobject */
kobject_unregister(&edac_memctrl_kobj);
- /* release the master edac mc kobject */
- kobject_put(&edac_memctrl_kobj);
-
/* Unregister the 'edac' object */
sysdev_class_unregister(&edac_class);
#endif /* DISABLE_EDAC_SYSFS */
@@ -594,8 +589,6 @@
debugf1("%s()\n", __func__);
memset(&edac_pci_kobj, 0, sizeof(edac_pci_kobj));
-
- kobject_init(&edac_pci_kobj);
edac_pci_kobj.parent = &edac_class.kset.kobj;
edac_pci_kobj.ktype = &ktype_edac_pci;
@@ -619,7 +612,6 @@
debugf0("%s()\n", __func__);
kobject_unregister(&edac_pci_kobj);
- kobject_put(&edac_pci_kobj);
#endif
}
@@ -829,7 +821,6 @@
/* generate ..../edac/mc/mc<id>/csrow<index> */
- kobject_init(&csrow->kobj);
csrow->kobj.parent = edac_mci_kobj;
csrow->kobj.ktype = &ktype_csrow;
@@ -1104,7 +1095,6 @@
debugf0("%s() idx=%d\n", __func__, mci->mc_idx);
memset(edac_mci_kobj, 0, sizeof(*edac_mci_kobj));
- kobject_init(edac_mci_kobj);
/* set the name of the mc<id> object */
err = kobject_set_name(edac_mci_kobj,"mc%d",mci->mc_idx);
@@ -1123,10 +1113,8 @@
/* create a symlink for the device */
err = sysfs_create_link(edac_mci_kobj, &mci->pdev->dev.kobj,
EDAC_DEVICE_SYMLINK);
- if (err) {
- kobject_unregister(edac_mci_kobj);
- return err;
- }
+ if (err)
+ goto fail0;
/* Make directories for each CSROW object
* under the mc<id> kobject
@@ -1139,7 +1127,7 @@
if (csrow->nr_pages > 0) {
err = edac_create_csrow_object(edac_mci_kobj,csrow,i);
if (err)
- goto fail;
+ goto fail1;
}
}
@@ -1150,16 +1138,14 @@
/* CSROW error: backout what has already been registered, */
-fail:
+fail1:
for ( i--; i >= 0; i--) {
- if (csrow->nr_pages > 0) {
+ if (csrow->nr_pages > 0)
kobject_unregister(&mci->csrows[i].kobj);
- kobject_put(&mci->csrows[i].kobj);
- }
}
+fail0:
kobject_unregister(edac_mci_kobj);
- kobject_put(edac_mci_kobj);
return err;
}
@@ -1177,16 +1163,13 @@
/* remove all csrow kobjects */
for (i = 0; i < mci->nr_csrows; i++) {
- if (mci->csrows[i].nr_pages > 0) {
+ if (mci->csrows[i].nr_pages > 0)
kobject_unregister(&mci->csrows[i].kobj);
- kobject_put(&mci->csrows[i].kobj);
- }
}
sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK);
kobject_unregister(&mci->edac_mci_kobj);
- kobject_put(&mci->edac_mci_kobj);
#endif /* DISABLE_EDAC_SYSFS */
}