diff --git a/drivers/usb/gadget/f_dfu.c b/drivers/usb/gadget/f_dfu.c
index 4bedc7d..e9340ff 100644
--- a/drivers/usb/gadget/f_dfu.c
+++ b/drivers/usb/gadget/f_dfu.c
@@ -336,6 +336,8 @@
 		f_dfu->dfu_state = DFU_STATE_dfuUPLOAD_IDLE;
 		f_dfu->blk_seq_num = 0;
 		value = handle_upload(req, len);
+		if (value >= 0 && value < len)
+			f_dfu->dfu_state = DFU_STATE_dfuIDLE;
 		break;
 	case USB_REQ_DFU_ABORT:
 		/* no zlp? */