From a0254324eeea3b00676eeb54ba80774a46cb8afb Mon Sep 17 00:00:00 2001 From: Xenia Ragiadakou Date: Tue, 6 Aug 2013 07:52:46 +0300 Subject: [PATCH] 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 Signed-off-by: Sarah Sharp --- drivers/usb/host/xhci-ring.c | 3 ++- drivers/usb/host/xhci-trace.h | 5 +++++ drivers/usb/host/xhci.c | 17 +++++++++++------ 3 files changed, 18 insertions(+), 7 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index e88e8772ab5d..3393ce755b15 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1151,7 +1151,8 @@ static void handle_reset_ep_completion(struct xhci_hcd *xhci, /* This command will only fail if the endpoint wasn't halted, * but we don't care. */ - xhci_dbg(xhci, "Ignoring reset ep completion code of %u\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep, + "Ignoring reset ep completion code of %u", GET_COMP_CODE(le32_to_cpu(event->status))); /* HW with the reset endpoint quirk needs to have a configure endpoint diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h index f0447c6cb29b..757b26f6e37b 100644 --- a/drivers/usb/host/xhci-trace.h +++ b/drivers/usb/host/xhci-trace.h @@ -46,6 +46,11 @@ DEFINE_EVENT(xhci_log_msg, xhci_dbg_quirks, TP_ARGS(vaf) ); +DEFINE_EVENT(xhci_log_msg, xhci_dbg_reset_ep, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + #endif /* __XHCI_TRACE_H */ /* this part must be outside header guard */ diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index ffb3ed09eb0d..18c710dc68dc 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -2818,7 +2818,8 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, 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 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, * 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 @@ void xhci_endpoint_reset(struct usb_hcd *hcd, 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); /* -- 2.34.1