firmware-utils: fix -Wpointer-sign warnings

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 8 insertions, 6 deletions

diff --git a/tools/firmware-utils/src/xorimage.c b/tools/firmware-utils/src/xorimage.c
index 4d1cd2d5de..e13531ab4a 100644
--- 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;
 }