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-rw-r--r--util/amdfwtool/amdfwtool.c16
1 files changed, 7 insertions, 9 deletions
diff --git a/util/amdfwtool/amdfwtool.c b/util/amdfwtool/amdfwtool.c
index 1ecb7aaaab..4c5b2163d4 100644
--- a/util/amdfwtool/amdfwtool.c
+++ b/util/amdfwtool/amdfwtool.c
@@ -148,17 +148,15 @@ static uint32_t fletcher32(const void *data, int length)
c0 = 0xFFFF;
c1 = 0xFFFF;
- for (index = 0; index < length; index++) {
- /*
- * Ignore the contents of the checksum field.
- */
+ while (length) {
+ index = length >= 359 ? 359 : length;
+ length -= index;
+ do {
c0 += *(pptr++);
c1 += c0;
- if ((index % 360) == 0) {
- /* Sums[0,1] mod 64K + overflow */
- c0 = (c0 & 0xFFFF) + (c0 >> 16);
- c1 = (c1 & 0xFFFF) + (c1 >> 16);
- }
+ } while (--index);
+ c0 = (c0 & 0xFFFF) + (c0 >> 16);
+ c1 = (c1 & 0xFFFF) + (c1 >> 16);
}
/* Sums[0,1] mod 64K + overflow */