From e1880ed80a4718ae0df49d115b6079183a01a716 Mon Sep 17 00:00:00 2001
From: Stefan Berger <stefanb@linux.vnet.ibm.com>
Date: Tue, 20 Mar 2018 12:31:45 -0400
Subject: [PATCH] tpm: CRB: set registers to 0 by default
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Initialize all registers of the CRB device to 0. This clears a few
flags upon a reset.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 hw/tpm/tpm_crb.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/tpm/tpm_crb.c b/hw/tpm/tpm_crb.c
index 114b66ebe1..4bd76b5430 100644
--- a/hw/tpm/tpm_crb.c
+++ b/hw/tpm/tpm_crb.c
@@ -208,6 +208,8 @@ static void tpm_crb_reset(void *dev)
 
     tpm_backend_reset(s->tpmbe);
 
+    memset(s->regs, 0, sizeof(s->regs));
+
     ARRAY_FIELD_DP32(s->regs, CRB_LOC_STATE,
                      tpmRegValidSts, 1);
     ARRAY_FIELD_DP32(s->regs, CRB_INTF_ID,