From 74b3e92dcb9e343e135a681259514b4fd28086ea Mon Sep 17 00:00:00 2001
From: Eric Auger <eric.auger@redhat.com>
Date: Fri, 6 May 2022 15:25:09 +0200
Subject: [PATCH 4/5] sysemu: tpm: Add a stub function for TPM_IS_CRB

RH-Author: Eric Auger <eric.auger@redhat.com>
RH-MergeRequest: 84: vfio/common: Remove spurious tpm-crb-cmd misalignment warning
RH-Commit: [1/2] 0ab55ca1aa12a3a7cbdef5a378928f75e030e536 (eauger1/centos-qemu-kvm)
RH-Bugzilla: 2037612
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Andrew Jones <drjones@redhat.com>

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2037612
Brew: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=45166961
Upstream Status: YES
Tested: With TPM-CRB and VFIO

In a subsequent patch, VFIO will need to recognize if
a memory region owner is a TPM CRB device. Hence VFIO
needs to use TPM_IS_CRB() even if CONFIG_TPM is unset. So
let's add a stub function.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Suggested-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linnux.ibm.com>
Link: https://lore.kernel.org/r/20220506132510.1847942-2-eric.auger@redhat.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
(cherry picked from commit 4168cdad398843ed53d650a27651868b4d3e21c9)
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 include/sysemu/tpm.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
index 68b2206463..fb40e30ff6 100644
--- a/include/sysemu/tpm.h
+++ b/include/sysemu/tpm.h
@@ -80,6 +80,12 @@ static inline TPMVersion tpm_get_version(TPMIf *ti)
 #define tpm_init()  (0)
 #define tpm_cleanup()
 
+/* needed for an alignment check in non-tpm code */
+static inline Object *TPM_IS_CRB(Object *obj)
+{
+     return NULL;
+}
+
 #endif /* CONFIG_TPM */
 
 #endif /* QEMU_TPM_H */
-- 
2.31.1