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-rw-r--r--tools/firmware-utils/src/mkdir615h1.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/firmware-utils/src/mkdir615h1.c b/tools/firmware-utils/src/mkdir615h1.c
index 84692aa3aa..d9fb35c1ec 100644
--- a/tools/firmware-utils/src/mkdir615h1.c
+++ b/tools/firmware-utils/src/mkdir615h1.c
@@ -199,7 +199,7 @@ static int encode_image(const char *input_file_name,
}
for (i = 0; i < bytes_read; i++)
- buf[i] ^= magic >> ((((i >> 60) + i) & 7) - (i >> 60));
+ buf[i] ^= magic >> (i % 8) & 0xff;
fwrite(&buf, bytes_read, 1, fp_output);
}
@@ -254,7 +254,7 @@ int decode_image(const char *input_file_name, const char *output_file_name)
bytes_read = fread(&buf, 1, BUF_SIZE, fp_input);
for (i = 0; i < bytes_read; i++)
- buf[i] ^= header.magic >> ((((i >> 60) + i) & 7) - (i >> 60));
+ buf[i] ^= header.magic >> (i % 8) & 0xff;
/*
* Handle padded source file