commit 6ad5d9450a7573973299f870247e6284470bd425
author Andres AG <andres.amayagarcia@arm.com> Mon Sep 26 10:09:30 2016 +0100
committer Simon Butcher <simon.butcher@arm.com> Thu Oct 13 12:54:32 2016 +0100
tree 8e78310ec200e36764ed684857f756236a3aff16
parent 6b8d9cffc2521ba95299b45fd4b7f138c3bf7874

Fix documentation for mbedtls_gcm_finish()

Fix implementation and documentation missmatch for the function
arguments to mbedtls_gcm_finish(). Also, removed redundant if condition
that always evaluates to true.

include/polarssl/gcm.h

diff --git a/include/polarssl/gcm.h b/include/polarssl/gcm.h
index 5a94722..3326919 100644
--- a/include/polarssl/gcm.h
+++ b/include/polarssl/gcm.h
@@ -186,8 +186,8 @@
  *                  16 bytes.
  *
  * \param ctx       GCM context
- * \param tag       buffer for holding the tag (may be NULL if tag_len is 0)
- * \param tag_len   length of the tag to generate
+ * \param tag       buffer for holding the tag
+ * \param tag_len   length of the tag to generate (must be at least 4)
  *
  * \return          0 if successful or POLARSSL_ERR_GCM_BAD_INPUT
  */