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-rw-r--r--hw/usb/dev-mtp.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/hw/usb/dev-mtp.c b/hw/usb/dev-mtp.c
index 6df70a0844..c61c0e0878 100644
--- a/hw/usb/dev-mtp.c
+++ b/hw/usb/dev-mtp.c
@@ -238,7 +238,8 @@ typedef struct {
} QEMU_PACKED ObjectInfo;
#define TYPE_USB_MTP "usb-mtp"
-#define USB_MTP(obj) OBJECT_CHECK(MTPState, (obj), TYPE_USB_MTP)
+DECLARE_INSTANCE_CHECKER(MTPState, USB_MTP,
+ TYPE_USB_MTP)
#define QEMU_STORAGE_ID 0x00010001