[Qemu-devel] [PATCH v2 19/28] tpm: add TPM interface to lookup TPM version

[Marc-André Lureau]

Do not hardcode TPM device model to lookup version, use an interface
instead.

Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com>
Reviewed-by: Stefan Berger <stef...@linux.vnet.ibm.com>
---
 include/sysemu/tpm.h | 5 ++---
 hw/tpm/tpm_tis.c     | 5 +++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
index 2fe0f1e120..650b4b8565 100644
--- a/include/sysemu/tpm.h
+++ b/include/sysemu/tpm.h
@@ -42,6 +42,7 @@ typedef struct TPMIfClass {
 
     enum TpmModel model;
     void (*request_completed)(TPMIf *obj);
+    enum TPMVersion (*get_version)(TPMIf *obj);
 } TPMIfClass;
 
 #define TYPE_TPM_TIS                "tpm-tis"
@@ -54,15 +55,13 @@ static inline TPMIf *tpm_find(void)
     return TPM_IF(obj);
 }
 
-TPMVersion tpm_tis_get_tpm_version(Object *obj);
-
 static inline TPMVersion tpm_get_version(TPMIf *ti)
 {
     if (!ti) {
         return TPM_VERSION_UNSPEC;
     }
 
-    return tpm_tis_get_tpm_version(OBJECT(ti));
+    return TPM_IF_GET_CLASS(ti)->get_version(ti);
 }
 
 #endif /* QEMU_TPM_H */
diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c
index 1e846f1201..a0b39b6211 100644
--- a/hw/tpm/tpm_tis.c
+++ b/hw/tpm/tpm_tis.c
@@ -990,9 +990,9 @@ static void tpm_tis_realloc_buffer(TPMSizedBuffer *sb)
 /*
  * Get the TPMVersion of the backend device being used
  */
-TPMVersion tpm_tis_get_tpm_version(Object *obj)
+static enum TPMVersion tpm_tis_get_tpm_version(TPMIf *ti)
 {
-    TPMState *s = TPM(obj);
+    TPMState *s = TPM(ti);
 
     return tpm_backend_get_tpm_version(s->be_driver);
 }
@@ -1098,6 +1098,7 @@ static void tpm_tis_class_init(ObjectClass *klass, void 
*data)
     dc->reset = tpm_tis_reset;
     dc->vmsd  = &vmstate_tpm_tis;
     tc->model = TPM_MODEL_TPM_TIS;
+    tc->get_version = tpm_tis_get_tpm_version;
     tc->request_completed = tpm_tis_request_completed;
 }
 
-- 
2.15.0.rc0.40.gaefcc5f6f