firmware-utils: fix -Wpointer-sign warnings

[openwrt/staging/zorun.git] / tools / firmware-utils / src / xorimage.c

diff --git a/tools/firmware-utils/src/xorimage.c b/tools/firmware-utils/src/xorimage.c
index 4d1cd2d5de745b1940b82b2a071130e2dd998a15..e13531ab4a940b3cd914f4a7e4469b22beccc1a2 100644 (file)
--- a/tools/firmware-utils/src/xorimage.c
+++ b/tools/firmware-utils/src/xorimage.c
@@ -29,15 +29,17 @@ static char default_pattern[] = "12345678";
 static int is_hex_pattern;
 
 
-int xor_data(uint8_t *data, size_t len, const uint8_t *pattern, int p_len, int p_off)
+int xor_data(void *data, size_t len, const void *pattern, int p_len, int p_off)
 {
-       int offset = p_off;
+       const uint8_t *key = pattern;
+       uint8_t *d = data;
+
        while (len--) {
-               *data ^= pattern[offset];
-               data++;
-               offset = (offset + 1) % p_len;
+               *d ^= key[p_off];
+               d++;
+               p_off = (p_off + 1) % p_len;
        }
-       return offset;
+       return p_off;
 }