tools: fdtgrep: Use unsigned chars for arrays
Otherwise, values over 127 end up prefixed with ffffff.
Signed-off-by: Samuel Dionne-Riel <samuel@dionne-riel.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/fdtgrep.c b/tools/fdtgrep.c
index e4112b8..db51246 100644
--- a/tools/fdtgrep.c
+++ b/tools/fdtgrep.c
@@ -213,7 +213,7 @@
} else {
printf(" = [");
for (i = 0; i < len; i++)
- printf("%02x%s", *p++, i < len - 1 ? " " : "");
+ printf("%02x%s", (unsigned char)*p++, i < len - 1 ? " " : "");
printf("]");
}
}