xhci: add trace for debug messages related to endpoint reset
This patch defines a new trace event, which is called xhci_dbg_reset_ep
and belongs in the event class xhci_log_msg, and adds tracepoints that
trace the debug messages associated with resetting an endpoint after
the reception of a STALL packet.
Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index ffb3ed0..18c710d 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -2818,7 +2818,8 @@
struct xhci_dequeue_state deq_state;
struct xhci_virt_ep *ep;
- xhci_dbg(xhci, "Cleaning up stalled endpoint ring\n");
+ xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep,
+ "Cleaning up stalled endpoint ring");
ep = &xhci->devs[udev->slot_id]->eps[ep_index];
/* We need to move the HW's dequeue pointer past this TD,
* or it will attempt to resend it on the next doorbell ring.
@@ -2831,7 +2832,8 @@
* issue a configure endpoint command later.
*/
if (!(xhci->quirks & XHCI_RESET_EP_QUIRK)) {
- xhci_dbg(xhci, "Queueing new dequeue state\n");
+ xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep,
+ "Queueing new dequeue state");
xhci_queue_new_dequeue_state(xhci, udev->slot_id,
ep_index, ep->stopped_stream, &deq_state);
} else {
@@ -2874,16 +2876,19 @@
ep_index = xhci_get_endpoint_index(&ep->desc);
virt_ep = &xhci->devs[udev->slot_id]->eps[ep_index];
if (!virt_ep->stopped_td) {
- xhci_dbg(xhci, "Endpoint 0x%x not halted, refusing to reset.\n",
- ep->desc.bEndpointAddress);
+ xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep,
+ "Endpoint 0x%x not halted, refusing to reset.",
+ ep->desc.bEndpointAddress);
return;
}
if (usb_endpoint_xfer_control(&ep->desc)) {
- xhci_dbg(xhci, "Control endpoint stall already handled.\n");
+ xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep,
+ "Control endpoint stall already handled.");
return;
}
- xhci_dbg(xhci, "Queueing reset endpoint command\n");
+ xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep,
+ "Queueing reset endpoint command");
spin_lock_irqsave(&xhci->lock, flags);
ret = xhci_queue_reset_ep(xhci, udev->slot_id, ep_index);
/*