driver core: Implement ns directory support for device classes.

device_del and device_rename were modified to use
sysfs_delete_link and sysfs_rename_link respectively to ensure
when these operations happen on devices whose classes
are in namespace directories they work properly.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 12 insertions, 9 deletions

diff --git a/drivers/base/core.c b/drivers/base/core.c
index f0699918e2f6..17e7d5048b83 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -786,7 +786,7 @@ out_device:
 out_busid:
         if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
             device_is_not_partition(dev))
-                sysfs_remove_link(&dev->class->p->class_subsys.kobj,
+                sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj,
                                   dev_name(dev));
 #else
         /* link in the class directory pointing to the device */
@@ -804,7 +804,7 @@ out_busid:
         return 0;
 
 out_busid:
-        sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev_name(dev));
+        sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj, dev_name(dev));
 #endif
 
 out_subsys:
@@ -832,13 +832,13 @@ static void device_remove_class_symlinks(struct device *dev)
 
         if (dev->kobj.parent != &dev->class->p->class_subsys.kobj &&
             device_is_not_partition(dev))
-                sysfs_remove_link(&dev->class->p->class_subsys.kobj,
+                sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj,
                                   dev_name(dev));
 #else
         if (dev->parent && device_is_not_partition(dev))
                 sysfs_remove_link(&dev->kobj, "device");
 
-        sysfs_remove_link(&dev->class->p->class_subsys.kobj, dev_name(dev));
+        sysfs_delete_link(&dev->class->p->class_subsys.kobj, &dev->kobj, dev_name(dev));
 #endif
 
         sysfs_remove_link(&dev->kobj, "subsystem");
@@ -1624,6 +1624,14 @@ int device_rename(struct device *dev, char *new_name)
                 goto out;
         }
 
+#ifndef CONFIG_SYSFS_DEPRECATED
+        if (dev->class) {
+                error = sysfs_rename_link(&dev->class->p->class_subsys.kobj,
+                        &dev->kobj, old_device_name, new_name);
+                if (error)
+                        goto out;
+        }
+#endif
         error = kobject_rename(&dev->kobj, new_name);
         if (error)
                 goto out;
@@ -1638,11 +1646,6 @@ int device_rename(struct device *dev, char *new_name)
                                                   new_class_name);
                 }
         }
-#else
-        if (dev->class) {
-                error = sysfs_rename_link(&dev->class->p->class_subsys.kobj,
-                                          &dev->kobj, old_device_name, new_name);
-        }
 #endif
 
 out: