Re: [Qemu-devel] [PATCH v2 24/28] tpm-tis: check that at most one TPM device exists

[Stefan Berger]

On 11/06/2017 01:39 PM, Marc-André Lureau wrote:
> Signed-off-by: Marc-André Lureau <address@hidden>

Reviewed-by: Stefan Berger <address@hidden>

> ---
>   hw/tpm/tpm_tis.c | 5 +++++
>   1 file changed, 5 insertions(+)
>
> diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c
> index 175785b9c4..dccc56ab09 100644
> --- a/hw/tpm/tpm_tis.c
> +++ b/hw/tpm/tpm_tis.c
> @@ -1057,6 +1057,11 @@ 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",