[PATCH 09/11] tpm_tis_sysbus: fix crash when PPI is enabled

[Joelle van Dyne <j@getutm.app>]

If 'ppi' property is set, then `tpm_ppi_reset` is called on reset
which SEGFAULTs because `tpmppi->buf` is not allocated.

Signed-off-by: Joelle van Dyne <j@getutm.app>
---
 hw/tpm/tpm_tis_sysbus.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/tpm/tpm_tis_sysbus.c b/hw/tpm/tpm_tis_sysbus.c
index 45e63efd63..1014d5d993 100644
--- a/hw/tpm/tpm_tis_sysbus.c
+++ b/hw/tpm/tpm_tis_sysbus.c
@@ -124,6 +124,10 @@ static void tpm_tis_sysbus_realizefn(DeviceState *dev, Error **errp)
         error_setg(errp, "'tpmdev' property is required");
         return;
     }
+
+    if (s->ppi_enabled) {
+        sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->ppi.ram);
+    }
 }
 
 static void tpm_tis_sysbus_class_init(ObjectClass *klass, void *data)
-- 
2.39.2 (Apple Git-143)