1 files changed, 5 insertions, 1 deletions

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 217fd2e7f435..5339aca811d2 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -1586,7 +1586,11 @@ EXPORT_SYMBOL_GPL(__cpuhp_state_add_instance);
  * @startup:    startup callback function
  * @teardown:   teardown callback function
  *
- * Returns 0 if successful, otherwise a proper error code
+ * Returns:
+ *   On success:
+ *      Positive state number if @state is CPUHP_AP_ONLINE_DYN
+ *      0 for all other states
+ *   On failure: proper (negative) error code
  */
 int __cpuhp_setup_state(enum cpuhp_state state,
                         const char *name, bool invoke,