OHCI_WRITEBACK_DONE_HEAD
status = OHCI_WRITEBACK_DONE_HEAD;
& ~OHCI_WRITEBACK_DONE_HEAD;
if (status & OHCI_WRITEBACK_DONE_HEAD) {
acknowledge |= OHCI_WRITEBACK_DONE_HEAD;
| OHCI_WRITEBACK_DONE_HEAD \
| OHCI_WRITEBACK_DONE_HEAD \