Index: head/security/tpm2-abrmd/Makefile
===================================================================
--- head/security/tpm2-abrmd/Makefile
+++ head/security/tpm2-abrmd/Makefile
@@ -2,6 +2,7 @@
 
 PORTNAME=	tpm2-abrmd
 DISTVERSION=	2.2.0
+PORTREVISION=	1
 CATEGORIES=	security
 MASTER_SITES=	https://github.com/tpm2-software/tpm2-abrmd/releases/download/${DISTVERSION}/
 
Index: head/security/tpm2-abrmd/files/patch-src_tabrmd-defaults.h
===================================================================
--- head/security/tpm2-abrmd/files/patch-src_tabrmd-defaults.h
+++ head/security/tpm2-abrmd/files/patch-src_tabrmd-defaults.h
@@ -0,0 +1,11 @@
+--- src/tabrmd-defaults.h.orig	2019-09-23 18:08:25 UTC
++++ src/tabrmd-defaults.h
+@@ -17,7 +17,7 @@
+ #define TABRMD_SESSIONS_MAX_DEFAULT 4
+ #define TABRMD_SESSIONS_MAX 64
+ #define TABRMD_TCTI_FILENAME_DEFAULT "libtss2-tcti-device.so.0"
+-#define TABRMD_TCTI_CONF_DEFAULT NULL
++#define TABRMD_TCTI_CONF_DEFAULT "device:/dev/tpm"
+ #define TABRMD_TRANSIENT_MAX_DEFAULT 27
+ #define TABRMD_TRANSIENT_MAX 100
+