diff options
Diffstat (limited to 'drivers/hwtracing/stm/policy.c')
| -rw-r--r-- | drivers/hwtracing/stm/policy.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/hwtracing/stm/policy.c b/drivers/hwtracing/stm/policy.c index 3fd07e275b34..15d35d891643 100644 --- a/drivers/hwtracing/stm/policy.c +++ b/drivers/hwtracing/stm/policy.c @@ -392,7 +392,7 @@ static struct configfs_subsystem stp_policy_subsys = { static struct stp_policy_node * __stp_policy_node_lookup(struct stp_policy *policy, char *s) { - struct stp_policy_node *policy_node, *ret; + struct stp_policy_node *policy_node, *ret = NULL; struct list_head *head = &policy->group.cg_children; struct config_item *item; char *start, *end = s; @@ -400,10 +400,6 @@ __stp_policy_node_lookup(struct stp_policy *policy, char *s) if (list_empty(head)) return NULL; - /* return the first entry if everything else fails */ - item = list_entry(head->next, struct config_item, ci_entry); - ret = to_stp_policy_node(item); - next: for (;;) { start = strsep(&end, "/"); @@ -449,13 +445,17 @@ stp_policy_node_lookup(struct stm_device *stm, char *s) if (policy_node) config_item_get(&policy_node->group.cg_item); - mutex_unlock(&stp_policy_subsys.su_mutex); + else + mutex_unlock(&stp_policy_subsys.su_mutex); return policy_node; } void stp_policy_node_put(struct stp_policy_node *policy_node) { + lockdep_assert_held(&stp_policy_subsys.su_mutex); + + mutex_unlock(&stp_policy_subsys.su_mutex); config_item_put(&policy_node->group.cg_item); } |