diff options
| -rw-r--r-- | hw/tpm/tpm_tis.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c index 0a23203..db101b6 100644 --- a/hw/tpm/tpm_tis.c +++ b/hw/tpm/tpm_tis.c @@ -1061,6 +1061,11 @@ static void tpm_tis_realizefn(DeviceState *dev, Error **errp) { TPMState *s = TPM(dev); + if (!tpm_find()) { + error_setg(errp, "at most one TPM device is permitted"); + return; + } + s->be_driver = qemu_find_tpm_be(s->backend); if (!s->be_driver) { error_setg(errp, "backend driver with id %s could not be found", |