IB/core: Fix kobject leak on device register error flow
The ports kobject isn't being released during error flow in device
registration. This patch refactors the ports kobject cleanup into a
single function called from both the error flow in device registration
and from the unregistration function.
A couple of attributes aren't being deleted (iw_stats_group, and
ib_class_attributes). While this may be handled implicitly by the
destruction of their kobjects, it seems better to handle all the
attributes the same way.
Signed-off-by: Haggai Eran <haggaie@mellanox.com>
[ Make free_port_list_attributes() static. - Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 68fa798..cbd0383 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -816,6 +816,22 @@
.attrs = iw_proto_stats_attrs,
};
+static void free_port_list_attributes(struct ib_device *device)
+{
+ struct kobject *p, *t;
+
+ list_for_each_entry_safe(p, t, &device->port_list, entry) {
+ struct ib_port *port = container_of(p, struct ib_port, kobj);
+ list_del(&p->entry);
+ sysfs_remove_group(p, &pma_group);
+ sysfs_remove_group(p, &port->pkey_group);
+ sysfs_remove_group(p, &port->gid_group);
+ kobject_put(p);
+ }
+
+ kobject_put(device->ports_parent);
+}
+
int ib_device_register_sysfs(struct ib_device *device,
int (*port_callback)(struct ib_device *,
u8, struct kobject *))
@@ -869,19 +885,7 @@
return 0;
err_put:
- {
- struct kobject *p, *t;
- struct ib_port *port;
-
- list_for_each_entry_safe(p, t, &device->port_list, entry) {
- list_del(&p->entry);
- port = container_of(p, struct ib_port, kobj);
- sysfs_remove_group(p, &pma_group);
- sysfs_remove_group(p, &port->pkey_group);
- sysfs_remove_group(p, &port->gid_group);
- kobject_put(p);
- }
- }
+ free_port_list_attributes(device);
err_unregister:
device_unregister(class_dev);
@@ -892,22 +896,18 @@
void ib_device_unregister_sysfs(struct ib_device *device)
{
- struct kobject *p, *t;
- struct ib_port *port;
-
/* Hold kobject until ib_dealloc_device() */
- kobject_get(&device->dev.kobj);
+ struct kobject *kobj_dev = kobject_get(&device->dev.kobj);
+ int i;
- list_for_each_entry_safe(p, t, &device->port_list, entry) {
- list_del(&p->entry);
- port = container_of(p, struct ib_port, kobj);
- sysfs_remove_group(p, &pma_group);
- sysfs_remove_group(p, &port->pkey_group);
- sysfs_remove_group(p, &port->gid_group);
- kobject_put(p);
- }
+ if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats)
+ sysfs_remove_group(kobj_dev, &iw_stats_group);
- kobject_put(device->ports_parent);
+ free_port_list_attributes(device);
+
+ for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i)
+ device_remove_file(&device->dev, ib_class_attributes[i]);
+
device_unregister(&device->dev);
}