On Tue, May 2, 2017 at 3:52 PM Amarnath Valluri
<address@hidden <mailto:address@hidden>> wrote:
This allows backend implementations left optional interface methods.
For mandatory methods assertion checks added.
Signed-off-by: Amarnath Valluri <address@hidden
<mailto:address@hidden>>
---
backends/tpm.c | 24 ++++++++++++++++++------
hw/tpm/tpm_passthrough.c | 16 ----------------
2 files changed, 18 insertions(+), 22 deletions(-)
diff --git a/backends/tpm.c b/backends/tpm.c
index cf5abf1..8245426 100644
--- a/backends/tpm.c
+++ b/backends/tpm.c
@@ -48,7 +48,7 @@ const char *tpm_backend_get_desc(TPMBackend *s)
{
TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
- return k->ops->desc();
+ return k->ops->desc ? k->ops->desc() : "";
}
If it only need to returns const, we may consider using a class field,
defaulting to null.