diff --git a/drivers/usb/eth/mcs7830.c b/drivers/usb/eth/mcs7830.c
index 9d6cf8c..4abef5d 100644
--- a/drivers/usb/eth/mcs7830.c
+++ b/drivers/usb/eth/mcs7830.c
@@ -622,10 +622,12 @@
 	int len;
 
 	len = mcs7830_recv_common(ueth, buf);
-	if (len <= 0)
+	if (len >= 0) {
 		net_process_received_packet(buf, len);
+		return 0;
+	}
 
-	return 0;
+	return len;
 }
 
 /*