diff options
Diffstat (limited to 'drivers/usb/host/xhci-ring.c')
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 56 |
1 files changed, 27 insertions, 29 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index a9443651ce0f..c239c688076c 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * xHCI host controller driver * @@ -5,19 +6,6 @@ * * Author: Sarah Sharp * Some code borrowed from the Linux EHCI driver. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* @@ -171,13 +159,13 @@ static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring) if (ring->type == TYPE_EVENT) { if (!last_trb_on_seg(ring->deq_seg, ring->dequeue)) { ring->dequeue++; - return; + goto out; } if (last_trb_on_ring(ring, ring->deq_seg, ring->dequeue)) ring->cycle_state ^= 1; ring->deq_seg = ring->deq_seg->next; ring->dequeue = ring->deq_seg->trbs; - return; + goto out; } /* All other rings have link trbs */ @@ -190,6 +178,7 @@ static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring) ring->dequeue = ring->deq_seg->trbs; } +out: trace_xhci_inc_deq(ring); return; @@ -946,15 +935,12 @@ void xhci_hc_died(struct xhci_hcd *xhci) * Instead we use a combination of that flag and checking if a new timer is * pending. */ -void xhci_stop_endpoint_command_watchdog(unsigned long arg) +void xhci_stop_endpoint_command_watchdog(struct timer_list *t) { - struct xhci_hcd *xhci; - struct xhci_virt_ep *ep; + struct xhci_virt_ep *ep = from_timer(ep, t, stop_cmd_timer); + struct xhci_hcd *xhci = ep->xhci; unsigned long flags; - ep = (struct xhci_virt_ep *) arg; - xhci = ep->xhci; - spin_lock_irqsave(&xhci->lock, flags); /* bail out if cmd completed but raced with stop ep watchdog timer.*/ @@ -1309,6 +1295,7 @@ static void xhci_complete_del_and_free_cmd(struct xhci_command *cmd, u32 status) void xhci_cleanup_command_queue(struct xhci_hcd *xhci) { struct xhci_command *cur_cmd, *tmp_cmd; + xhci->current_cmd = NULL; list_for_each_entry_safe(cur_cmd, tmp_cmd, &xhci->cmd_list, cmd_list) xhci_complete_del_and_free_cmd(cur_cmd, COMP_COMMAND_ABORTED); } @@ -1679,9 +1666,14 @@ static void handle_port_status(struct xhci_hcd *xhci, bus_state->resume_done[faked_port_index] = jiffies + msecs_to_jiffies(USB_RESUME_TIMEOUT); set_bit(faked_port_index, &bus_state->resuming_ports); + /* Do the rest in GetPortStatus after resume time delay. + * Avoid polling roothub status before that so that a + * usb device auto-resume latency around ~40ms. + */ + set_bit(HCD_FLAG_POLL_RH, &hcd->flags); mod_timer(&hcd->rh_timer, bus_state->resume_done[faked_port_index]); - /* Do the rest in GetPortStatus */ + bogus_port_status = true; } } @@ -2579,15 +2571,21 @@ static int handle_tx_event(struct xhci_hcd *xhci, (struct xhci_generic_trb *) ep_trb); /* - * No-op TRB should not trigger interrupts. - * If ep_trb is a no-op TRB, it means the - * corresponding TD has been cancelled. Just ignore - * the TD. + * No-op TRB could trigger interrupts in a case where + * a URB was killed and a STALL_ERROR happens right + * after the endpoint ring stopped. Reset the halted + * endpoint. Otherwise, the endpoint remains stalled + * indefinitely. */ if (trb_is_noop(ep_trb)) { - xhci_dbg(xhci, - "ep_trb is a no-op TRB. Skip it for slot %u ep %u\n", - slot_id, ep_index); + if (trb_comp_code == COMP_STALL_ERROR || + xhci_requires_manual_halt_cleanup(xhci, ep_ctx, + trb_comp_code)) + xhci_cleanup_halted_endpoint(xhci, slot_id, + ep_index, + ep_ring->stream_id, + td, ep_trb, + EP_HARD_RESET); goto cleanup; } |