From 1374c45f6b1fb7838ef42144bdba5ef118045485 Mon Sep 17 00:00:00 2001
From: Gang Zhuo <gang.zhuo@gmail.com>
Date: Mon, 20 Mar 2017 21:23:58 +0800
Subject: [PATCH] fix build warning

---
 pcs/pcs_passport_dv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pcs/pcs_passport_dv.c b/pcs/pcs_passport_dv.c
index 73d66841..4bbdbc70 100644
--- a/pcs/pcs_passport_dv.c
+++ b/pcs/pcs_passport_dv.c
@@ -248,7 +248,7 @@ static void buf_encode_xor(char *buf, int len)
 static void buf_decode_xor(char *buf, int len)
 {
 	unsigned char *p = (unsigned char*)buf + len - 1;
-	while (p > buf) {
+	while (p > (unsigned char*)buf) {
 		*p = (*p ^ *(p - 1)) & 0xFF;
 		p--;
 	}