commit 821da84ff9894060e615e51c50306c361c3411b8
author Andres AG <andres.amayagarcia@arm.com> Mon Sep 26 10:09:30 2016 +0100
committer Simon Butcher <simon.butcher@arm.com> Wed Oct 12 19:49:41 2016 +0100
tree 8087637c0c633349e07281c3921c6e454726c2a2
parent 3a5e0709828a6550bfe16261b9ff946bbfacc3d0

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/mbedtls/gcm.h

diff --git a/include/mbedtls/gcm.h b/include/mbedtls/gcm.h
index 6743ac9..1b77aae 100644
--- a/include/mbedtls/gcm.h
+++ b/include/mbedtls/gcm.h
@@ -190,8 +190,8 @@
  *                  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 MBEDTLS_ERR_GCM_BAD_INPUT
  */