rust: add SysBusDeviceImpl

The only function, right now, is to ensure that anything with a
SysBusDeviceClass class is a SysBusDevice.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/rust/hw/timer/hpet/src/hpet.rs b/rust/hw/timer/hpet/src/hpet.rs
index 75ff5b3..b4ffccf 100644
--- a/rust/hw/timer/hpet/src/hpet.rs
+++ b/rust/hw/timer/hpet/src/hpet.rs
@@ -23,7 +23,7 @@ use qemu_api::{
     qdev::{DeviceImpl, DeviceMethods, DeviceState, Property, ResetType, ResettablePhasesImpl},
     qom::{ObjectImpl, ObjectType, ParentField},
     qom_isa,
-    sysbus::SysBusDevice,
+    sysbus::{SysBusDevice, SysBusDeviceImpl},
     timer::{Timer, CLOCK_VIRTUAL},
 };
 
@@ -887,3 +887,5 @@ impl DeviceImpl for HPETState {
 impl ResettablePhasesImpl for HPETState {
     const HOLD: Option<fn(&Self, ResetType)> = Some(Self::reset_hold);
 }
+
+impl SysBusDeviceImpl for HPETState {}