Changeset 69a93d02 in mainline

Timestamp:

2018-01-11T17:35:02Z (6 years ago)

Author:

Salmelu <salmelu@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

665368c

Parents:

4ed803f1

git-author:

Salmelu <salmelu@…> (2018-01-11 17:33:44)

git-committer:

Salmelu <salmelu@…> (2018-01-11 17:35:02)

Message:

xhci: Fixed isoch failing to start

File:

• uspace/drv/bus/usb/xhci/isoch.c (modified) (1 diff)

uspace/drv/bus/usb/xhci/isoch.c

@@ -293 +293 @@
         bool fed = false;
 
-        while (isoch->hw_enqueue != isoch->enqueue) {
+        /*
+         * There might be a case, where no transfer can't be put on the ring immediately
+         * (for endpoints with interval >= 500ms). In that case, the transfer buffers could fill
+         * and the first condition wouldn't be enough to enter the loop.
+         */
+        while (isoch->hw_enqueue != isoch->enqueue || isoch->transfers[isoch->hw_enqueue].state == ISOCH_FILLED) {
                 xhci_isoch_transfer_t * const it = &isoch->transfers[isoch->hw_enqueue];