edac_core: Do a better job with node removal
Make sure we remove groups at the right order
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index aacffe5..5a5734c 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -791,6 +791,7 @@
debugf1("%s()\n", __func__);
while (sysfs_attrib) {
+ debugf1("%s() sysfs_attrib = %p\n",__func__, sysfs_attrib);
if (sysfs_attrib->grp) {
struct mcidev_sysfs_group_kobj *grp_kobj;
@@ -798,10 +799,9 @@
if (!grp_kobj)
return -ENOMEM;
- list_add_tail(&grp_kobj->list, &mci->grp_kobj_list);
-
grp_kobj->grp = sysfs_attrib->grp;
grp_kobj->mci = mci;
+ list_add_tail(&grp_kobj->list, &mci->grp_kobj_list);
debugf0("%s() grp %s, mci %p\n", __func__,
sysfs_attrib->grp->name, mci);
@@ -810,26 +810,28 @@
&ktype_inst_grp,
&mci->edac_mci_kobj,
sysfs_attrib->grp->name);
- if (err)
+ if (err < 0) {
+ printk(KERN_ERR "kobject_init_and_add failed: %d\n", err);
return err;
-
+ }
err = edac_create_mci_instance_attributes(mci,
grp_kobj->grp->mcidev_attr,
&grp_kobj->kobj);
- if (err)
+ if (err < 0)
return err;
} else if (sysfs_attrib->attr.name) {
debugf0("%s() file %s\n", __func__,
sysfs_attrib->attr.name);
err = sysfs_create_file(kobj, &sysfs_attrib->attr);
+ if (err < 0) {
+ printk(KERN_ERR "sysfs_create_file failed: %d\n", err);
+ return err;
+ }
} else
break;
- if (err) {
- return err;
- }
sysfs_attrib++;
}
@@ -854,13 +856,24 @@
* Remove first all the atributes
*/
while (sysfs_attrib) {
+ debugf1("%s() sysfs_attrib = %p\n",__func__, sysfs_attrib);
if (sysfs_attrib->grp) {
- list_for_each_entry(grp_kobj, &mci->grp_kobj_list,
- list)
- if (grp_kobj->grp == sysfs_attrib->grp)
+ debugf1("%s() seeking for group %s\n",
+ __func__, sysfs_attrib->grp->name);
+ list_for_each_entry(grp_kobj,
+ &mci->grp_kobj_list, list) {
+ debugf1("%s() grp_kobj->grp = %p\n",__func__, grp_kobj->grp);
+ if (grp_kobj->grp == sysfs_attrib->grp) {
edac_remove_mci_instance_attributes(mci,
grp_kobj->grp->mcidev_attr,
&grp_kobj->kobj, count + 1);
+ debugf0("%s() group %s\n", __func__,
+ sysfs_attrib->grp->name);
+ kobject_put(&grp_kobj->kobj);
+ }
+ }
+ debugf1("%s() end of seeking for group %s\n",
+ __func__, sysfs_attrib->grp->name);
} else if (sysfs_attrib->attr.name) {
debugf0("%s() file %s\n", __func__,
sysfs_attrib->attr.name);
@@ -870,15 +883,14 @@
sysfs_attrib++;
}
- /*
- * Now that all attributes got removed, it is save to remove all groups
- */
- if (!count)
- list_for_each_entry_safe(grp_kobj, tmp, &mci->grp_kobj_list,
- list) {
- debugf0("%s() grp %s\n", __func__, grp_kobj->grp->name);
- kobject_put(&grp_kobj->kobj);
- }
+ /* Remove the group objects */
+ if (count)
+ return;
+ list_for_each_entry_safe(grp_kobj, tmp,
+ &mci->grp_kobj_list, list) {
+ list_del(&grp_kobj->list);
+ kfree(grp_kobj);
+ }
}
@@ -970,6 +982,7 @@
debugf0("%s()\n", __func__);
/* remove all csrow kobjects */
+ debugf0("%s() unregister this mci kobj\n", __func__);
for (i = 0; i < mci->nr_csrows; i++) {
if (mci->csrows[i].nr_pages > 0) {
debugf0("%s() unreg csrow-%d\n", __func__, i);
@@ -977,20 +990,20 @@
}
}
- debugf0("%s() remove_link\n", __func__);
+ /* remove this mci instance's attribtes */
+ if (mci->mc_driver_sysfs_attributes) {
+ debugf0("%s() unregister mci private attributes\n", __func__);
+ edac_remove_mci_instance_attributes(mci,
+ mci->mc_driver_sysfs_attributes,
+ &mci->edac_mci_kobj, 0);
+ }
/* remove the symlink */
+ debugf0("%s() remove_link\n", __func__);
sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK);
- debugf0("%s() remove_mci_instance\n", __func__);
-
- /* remove this mci instance's attribtes */
- edac_remove_mci_instance_attributes(mci,
- mci->mc_driver_sysfs_attributes,
- &mci->edac_mci_kobj, 0);
- debugf0("%s() unregister this mci kobj\n", __func__);
-
/* unregister this instance's kobject */
+ debugf0("%s() remove_mci_instance\n", __func__);
kobject_put(&mci->edac_mci_kobj);
}