correctly handle cases where the usb chunksize is smaller than the

combined write

diff --git a/jtagkey.c b/jtagkey.c
index 2be195451f13f2cbfa1aaa9c10ebd5666c420f8a..b06b6b46bc115a1b7c5dfbb5cf97d32f71349d7c 100644 (file)
--- a/jtagkey.c
+++ b/jtagkey.c
@@ -114,9 +114,9 @@ int jtagkey_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase,
                int len;
                DPRINTF("writing %d bytes due to %d following reads in %d chunks or full buffer\n", writepos-writebuf, nread, num);
 
-               len = writepos-pos;
-
                while (pos < writepos) {
+                       len = writepos-pos;
+
                        if (len > usb_maxlen)
                                len = usb_maxlen;