1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/firewire/fw-transaction.h b/drivers/firewire/fw-transaction.h
index 5abed193f4a6..5ceaccd10564 100644
--- a/drivers/firewire/fw-transaction.h
+++ b/drivers/firewire/fw-transaction.h
@@ -123,6 +123,10 @@ typedef void (*fw_transaction_callback_t)(struct fw_card *card, int rcode,
                                           size_t length,
                                           void *callback_data);
 
+/*
+ * Important note:  The callback must guarantee that either fw_send_response()
+ * or kfree() is called on the @request.
+ */
 typedef void (*fw_address_callback_t)(struct fw_card *card,
                                       struct fw_request *request,
                                       int tcode, int destination, int source,