return 0;
/* offset in TRBs */
segment_offset = trb - seg->trbs;
- if (segment_offset > TRBS_PER_SEGMENT)
+ if (segment_offset >= TRBS_PER_SEGMENT)
return 0;
return seg->dma + (segment_offset * sizeof(*trb));
}
ret = handshake(xhci, &xhci->op_regs->cmd_ring,
CMD_RING_RUNNING, 0, 5 * 1000 * 1000);
if (ret < 0) {
+ /* we are about to kill xhci, give it one more chance */
+ xhci_write_64(xhci, temp_64 | CMD_RING_ABORT,
+ &xhci->op_regs->cmd_ring);
+ udelay(1000);
+ ret = handshake(xhci, &xhci->op_regs->cmd_ring,
+ CMD_RING_RUNNING, 0, 3 * 1000 * 1000);
+ if (ret == 0)
+ return 0;
+
xhci_err(xhci, "Stopped the command ring failed, "
"maybe the host is dead\n");
xhci->xhc_state |= XHCI_STATE_DYING;
ep->stopped_td = td;
return 0;
} else {
- if (trb_comp_code == COMP_STALL) {
- /* The transfer is completed from the driver's
- * perspective, but we need to issue a set dequeue
- * command for this stalled endpoint to move the dequeue
- * pointer past the TD. We can't do that here because
- * the halt condition must be cleared first. Let the
- * USB class driver clear the stall later.
- */
- ep->stopped_td = td;
- ep->stopped_stream = ep_ring->stream_id;
- } else if (xhci_requires_manual_halt_cleanup(xhci,
- ep_ctx, trb_comp_code)) {
- /* Other types of errors halt the endpoint, but the
- * class driver doesn't call usb_reset_endpoint() unless
- * the error is -EPIPE. Clear the halted status in the
- * xHCI hardware manually.
+ if (trb_comp_code == COMP_STALL ||
+ xhci_requires_manual_halt_cleanup(xhci, ep_ctx,
+ trb_comp_code)) {
+ /* Issue a reset endpoint command to clear the host side
+ * halt, followed by a set dequeue command to move the
+ * dequeue pointer past the TD.
+ * The class driver clears the device side halt later.
*/
xhci_cleanup_halted_endpoint(xhci,
slot_id, ep_index, ep_ring->stream_id,
else
td->urb->actual_length = 0;
- xhci_cleanup_halted_endpoint(xhci,
- slot_id, ep_index, 0, td, event_trb);
- return finish_td(xhci, td, event_trb, event, ep, status, true);
+ return finish_td(xhci, td, event_trb, event, ep, status, false);
}
/*
* Did we transfer any data, despite the errors that might have
if (event_trb != ep_ring->dequeue) {
/* The event was for the status stage */
if (event_trb == td->last_trb) {
- if (td->urb->actual_length != 0) {
+ if (td->urb_length_set) {
/* Don't overwrite a previously set error code
*/
if ((*status == -EINPROGRESS || *status == 0) &&
td->urb->transfer_buffer_length;
}
} else {
- /* Maybe the event was for the data stage? */
+ /*
+ * Maybe the event was for the data stage? If so, update
+ * already the actual_length of the URB and flag it as
+ * set, so that it is not overwritten in the event for
+ * the last TRB.
+ */
+ td->urb_length_set = true;
td->urb->actual_length =
td->urb->transfer_buffer_length -
EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
break;
case COMP_DEV_ERR:
case COMP_STALL:
+ frame->status = -EPROTO;
+ skip_td = true;
+ break;
case COMP_TX_ERR:
frame->status = -EPROTO;
+ if (event_trb != td->last_trb)
+ return 0;
skip_td = true;
break;
case COMP_STOP:
if (ret) {
urb = td->urb;
urb_priv = urb->hcpriv;
- /* Leave the TD around for the reset endpoint function
- * to use(but only if it's not a control endpoint,
- * since we already queued the Set TR dequeue pointer
- * command for stalled control endpoints).
- */
- if (usb_endpoint_xfer_control(&urb->ep->desc) ||
- (trb_comp_code != COMP_STALL &&
- trb_comp_code != COMP_BABBLE))
- xhci_urb_free_priv(xhci, urb_priv);
- else
- kfree(urb_priv);
+
+ xhci_urb_free_priv(xhci, urb_priv);
usb_hcd_unlink_urb_from_ep(bus_to_hcd(urb->dev->bus), urb);
if ((urb->actual_length != urb->transfer_buffer_length &&
xhci_halt(xhci);
hw_died:
spin_unlock(&xhci->lock);
- return -ESHUTDOWN;
+ return IRQ_HANDLED;
}
/*
if (start_cycle == 0)
field |= 0x1;
- /* xHCI 1.0 6.4.1.2.1: Transfer Type field */
- if (xhci->hci_version == 0x100) {
+ /* xHCI 1.0/1.1 6.4.1.2.1: Transfer Type field */
+ if (xhci->hci_version >= 0x100) {
if (urb->transfer_buffer_length > 0) {
if (setup->bRequestType & USB_DIR_IN)
field |= TRB_TX_TYPE(TRB_DATA_IN);