return TD_RESULT_NEXT_QH;
}
-static int uhci_handle_td(UHCIState *s, uint32_t addr, UHCI_TD *td, uint32_t *int_mask)
+static int uhci_handle_td(UHCIState *s, uint32_t addr, UHCI_TD *td,
+ uint32_t *int_mask, bool queuing)
{
UHCIAsync *async;
int len = 0, max_len;
if (!async->done)
return TD_RESULT_ASYNC_CONT;
+ if (queuing) {
+ /* we are busy filling the queue, we are not prepared
+ to consume completed packages then, just leave them
+ in async state */
+ return TD_RESULT_ASYNC_CONT;
+ }
uhci_async_unlink(async);
goto done;
break;
}
trace_usb_uhci_td_queue(plink & ~0xf, ptd.ctrl, ptd.token);
- ret = uhci_handle_td(s, plink, &ptd, &int_mask);
+ ret = uhci_handle_td(s, plink, &ptd, &int_mask, true);
if (ret == TD_RESULT_ASYNC_CONT) {
break;
}
trace_usb_uhci_td_load(curr_qh & ~0xf, link & ~0xf, td.ctrl, td.token);
old_td_ctrl = td.ctrl;
- ret = uhci_handle_td(s, link, &td, &int_mask);
+ ret = uhci_handle_td(s, link, &td, &int_mask, false);
if (old_td_ctrl != td.ctrl) {
/* update the status bits of the TD */
val = cpu_to_le32(td.ctrl);