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>
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@ -1061,6 +1061,11 @@ static void tpm_tis_realizefn(DeviceState *dev, Error **errp)
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{
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{
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TPMState *s = TPM(dev);
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TPMState *s = TPM(dev);
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if (!tpm_find()) {
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error_setg(errp, "at most one TPM device is permitted");
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return;
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}
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s->be_driver = qemu_find_tpm_be(s->backend);
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s->be_driver = qemu_find_tpm_be(s->backend);
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if (!s->be_driver) {
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if (!s->be_driver) {
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error_setg(errp, "backend driver with id %s could not be found",
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error_setg(errp, "backend driver with id %s could not be found",
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