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| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2017-11-06 19:39:21 +0100 |
|---|---|---|
| committer | Stefan Berger <stefanb@linux.vnet.ibm.com> | 2017-12-14 23:39:15 -0500 |
| commit | 51a837e908d6f4bbe94469a4a0edcb76348fe964 (patch) | |
| tree | 62bccf154b1174485ecc8542fbd31437fbde0a21 | |
| parent | c87b35fa71833ec4c34fb4a85f03c47028c44d0e (diff) | |
tpm-tis: check that at most one TPM device exists
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
| -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 0a23203e75..db101b61d4 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", |