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-rw-r--r--tools/firmware-utils/src/buffalo-lib.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/firmware-utils/src/buffalo-lib.c b/tools/firmware-utils/src/buffalo-lib.c
index add3a7e023..b1d5ede0a2 100644
--- a/tools/firmware-utils/src/buffalo-lib.c
+++ b/tools/firmware-utils/src/buffalo-lib.c
@@ -179,7 +179,7 @@ int bcrypt_buf(unsigned char seed, unsigned char *key, unsigned char *src,
uint32_t buffalo_csum(uint32_t csum, void *buf, unsigned long len)
{
- char *p = buf;
+ signed char *p = buf;
while (len--) {
int i;