1 files changed, 6 insertions, 4 deletions
diff --git a/chardev/char-ringbuf.c b/chardev/char-ringbuf.c
index 67397a8ce9..d40d21d3cf 100644
--- a/chardev/char-ringbuf.c
+++ b/chardev/char-ringbuf.c
@@ -29,19 +29,21 @@
 #include "qemu/base64.h"
 #include "qemu/module.h"
 #include "qemu/option.h"
+#include "qom/object.h"
 
 /* Ring buffer chardev */
 
-typedef struct {
+struct RingBufChardev {
     Chardev parent;
     size_t size;
     size_t prod;
     size_t cons;
     uint8_t *cbuf;
-} RingBufChardev;
+};
+typedef struct RingBufChardev RingBufChardev;
 
-#define RINGBUF_CHARDEV(obj)                                    \
-    OBJECT_CHECK(RingBufChardev, (obj), TYPE_CHARDEV_RINGBUF)
+DECLARE_INSTANCE_CHECKER(RingBufChardev, RINGBUF_CHARDEV,
+                         TYPE_CHARDEV_RINGBUF)
 
 static size_t ringbuf_count(const Chardev *chr)
 {