[PATCH 06/12] rust: qdev: make ObjectImpl a supertrait of DeviceImpl

[Paolo Bonzini <pbonzini@redhat.com>]

In practice it has to be implemented always in order to access an
implementation of ClassInitImpl<ObjectClass>.  Make the relationship
explicit in the code.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 rust/qemu-api/src/qdev.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/rust/qemu-api/src/qdev.rs b/rust/qemu-api/src/qdev.rs
index 8f6744c5e26..cb6f12e726c 100644
--- a/rust/qemu-api/src/qdev.rs
+++ b/rust/qemu-api/src/qdev.rs
@@ -17,12 +17,12 @@
     callbacks::FnCall,
     cell::bql_locked,
     prelude::*,
-    qom::{ClassInitImpl, ObjectClass, Owned},
+    qom::{ClassInitImpl, ObjectClass, ObjectImpl, Owned},
     vmstate::VMStateDescription,
 };
 
 /// Trait providing the contents of [`DeviceClass`].
-pub trait DeviceImpl {
+pub trait DeviceImpl: ObjectImpl {
     /// _Realization_ is the second stage of device creation. It contains
     /// all operations that depend on device properties and can fail (note:
     /// this is not yet supported for Rust devices).
-- 
2.48.1