Re: [Qemu-devel] [PATCH 1/2] tpm: Split off tpm_crb_reset function

[Stefan Berger <stefanb@linux.vnet.ibm.com>]

On 02/01/2018 06:23 PM, Stefan Berger wrote:
> Split off the tpm_crb_reset function part from tpm_crb_realize
> that we need to run every time the machine resets.
>
> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
> ---
>   hw/tpm/tpm_crb.c | 6 ++++++
>   1 file changed, 6 insertions(+)
>
> diff --git a/hw/tpm/tpm_crb.c b/hw/tpm/tpm_crb.c
> index 687d255..624e2e9 100644
> --- a/hw/tpm/tpm_crb.c
> +++ b/hw/tpm/tpm_crb.c
> @@ -232,6 +232,11 @@ static void tpm_crb_realize(DeviceState *dev, Error **errp)
>           TPM_CRB_ADDR_BASE, &s->mmio);
>       memory_region_add_subregion(get_system_memory(),
>           TPM_CRB_ADDR_BASE + sizeof(s->regs), &s->cmdmem);
> +}
> +
> +static void tpm_crb_reset(DeviceState *dev)
> +{
> +    CRBState *s = CRB(dev);
>
>       tpm_backend_reset(s->tpmbe);
>
> @@ -274,6 +279,7 @@ static void tpm_crb_class_init(ObjectClass *klass, void *data)
>
>       dc->realize = tpm_crb_realize;
>       dc->props = tpm_crb_properties;
> +    dc->reset = tpm_crb_reset;
>       dc->vmsd  = &vmstate_tpm_crb;
>       dc->user_creatable = true;
>       tc->model = TPM_MODEL_TPM_CRB;


So this splt-off unfortunately causes the tpm-crb-test to fail since the 
reset function is not called. I wonder how to trigger that? Do we need 
to call tpm_crb_reset now from tpm_crb_realize just to make the tests 
work ? Or is there a function we can call in the test case to trigger 
the device reset ?