qdev, rust/hpet: fix type of HPET "timers" property

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/core/qdev-properties.c

@@ -442,6 +442,43 @@ const PropertyInfo qdev_prop_uint64_checkmask = {
     .set   = set_uint64_checkmask,
 };
 
+/* --- pointer-size integer --- */
+
+static void get_usize(Object *obj, Visitor *v, const char *name, void *opaque,
+                      Error **errp)
+{
+    const Property *prop = opaque;
+
+#if HOST_LONG_BITS == 32
+    uint32_t *ptr = object_field_prop_ptr(obj, prop);
+    visit_type_uint32(v, name, ptr, errp);
+#else
+    uint64_t *ptr = object_field_prop_ptr(obj, prop);
+    visit_type_uint64(v, name, ptr, errp);
+#endif
+}
+
+static void set_usize(Object *obj, Visitor *v, const char *name, void *opaque,
+                      Error **errp)
+{
+    const Property *prop = opaque;
+
+#if HOST_LONG_BITS == 32
+    uint32_t *ptr = object_field_prop_ptr(obj, prop);
+    visit_type_uint32(v, name, ptr, errp);
+#else
+    uint64_t *ptr = object_field_prop_ptr(obj, prop);
+    visit_type_uint64(v, name, ptr, errp);
+#endif
+}
+
+const PropertyInfo qdev_prop_usize = {
+    .type  = "usize",
+    .get   = get_usize,
+    .set   = set_usize,
+    .set_default_value = qdev_propinfo_set_default_value_uint,
+};
+
 /* --- string --- */
 
 static void release_string(Object *obj, const char *name, void *opaque)

include/hw/qdev-properties.h

@@ -52,6 +52,7 @@ extern const PropertyInfo qdev_prop_bool;
 extern const PropertyInfo qdev_prop_uint8;
 extern const PropertyInfo qdev_prop_uint16;
 extern const PropertyInfo qdev_prop_uint32;
+extern const PropertyInfo qdev_prop_usize;
 extern const PropertyInfo qdev_prop_int32;
 extern const PropertyInfo qdev_prop_uint64;
 extern const PropertyInfo qdev_prop_uint64_checkmask;

rust/hw/timer/hpet/src/hpet.rs

@@ -12,7 +12,7 @@ use std::{
 use qemu_api::{
     bindings::{
         address_space_memory, address_space_stl_le, qdev_prop_bit, qdev_prop_bool,
-        qdev_prop_uint32, qdev_prop_uint8,
+        qdev_prop_uint32, qdev_prop_usize,
     },
     c_str,
     cell::{BqlCell, BqlRefCell},
@@ -859,8 +859,8 @@ qemu_api::declare_properties! {
         c_str!("timers"),
         HPETState,
         num_timers,
-        unsafe { &qdev_prop_uint8 },
-        u8,
+        unsafe { &qdev_prop_usize },
+        usize,
         default = HPET_MIN_TIMERS
     ),
     qemu_api::define_property!(