[flashrom-gerrit] Change in flashrom[staging]: dediprog: Fix bug where too many transfers would be queued

[Nico Huber (Code Review)]

Hello David Hendricks,

I'd like you to do a code review.  Please visit

https://review.coreboot.org/19351

to review the following change.

Change subject: dediprog: Fix bug where too many transfers would be queued
......................................................................

dediprog: Fix bug where too many transfers would be queued

We didn't check the total number of queued transfers in the inner most
loop. Up to DEDIPROG_ASYNC_TRANSFERS - 1 invalid transfers could be
queued therefore. So add another check on the total number.

Change-Id: I91a8de47db7107455f5fc63ab2f13a0bd50c5b63
Signed-off-by: Nico Huber 
Acked-by: David Hendricks 
---
M dediprog.c
1 file changed, 3 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/51/19351/1

diff --git a/dediprog.c b/dediprog.c
index b7276e5..6f82772 100644
--- a/dediprog.c
+++ b/dediprog.c
@@ -462,7 +462,9 @@

/* Now transfer requested chunks using libusb's asynchronous interface. */
    while (!status.error && (status.queued_idx < count)) {
-		while ((status.queued_idx - status.finished_idx) < DEDIPROG_ASYNC_TRANSFERS) {
+		while ((status.queued_idx < count) &&
+		       (status.queued_idx - status.finished_idx) < DEDIPROG_ASYNC_TRANSFERS)
+		{
    		transfer = transfers[status.queued_idx % DEDIPROG_ASYNC_TRANSFERS];
    		libusb_fill_bulk_transfer(transfer, dediprog_handle, 0x80 | dediprog_in_endpoint,
    				(unsigned char *)buf + status.queued_idx * chunksize, chunksize,