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authorSarah Sharp <sarah.a.sharp@linux.intel.com>2011-12-20 04:56:04 +0400
committerSarah Sharp <sarah.a.sharp@linux.intel.com>2011-12-23 04:12:42 +0400
commit79688acfb5e124fcf586add00af32a2a1a532c64 (patch)
tree404ae896ab4dfefc16a1bc802da0108cc7ee0496 /drivers/usb/host
parent1ba6108f5fc02f04784e7206ed08d10805035507 (diff)
downloadlinux-79688acfb5e124fcf586add00af32a2a1a532c64.tar.xz
xhci: Be less verbose during URB cancellation.
With devices that can need up to 128 segments (with 64 TRBs per segment), we can't afford to print out the entire endpoint ring every time an URB is canceled. Instead, print the offset of the TRB, along with device pathname and endpoint number. Only print DMA addresses, since virtual addresses of internal structures are not useful. Change the cancellation code to be more clear about what steps of the cancellation it is in the process of doing (queueing the request, handling the stop endpoint command, turning the TDs into no-ops, or moving the dequeue pointers). Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Diffstat (limited to 'drivers/usb/host')
-rw-r--r--drivers/usb/host/xhci-ring.c15
-rw-r--r--drivers/usb/host/xhci.c19
2 files changed, 17 insertions, 17 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 1fdb7e1cca3f..f34a268c6ccd 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -552,12 +552,9 @@ static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring,
cpu_to_le32(TRB_CYCLE);
cur_trb->generic.field[3] |= cpu_to_le32(
TRB_TYPE(TRB_TR_NOOP));
- xhci_dbg(xhci, "Cancel TRB %p (0x%llx dma) "
- "in seg %p (0x%llx dma)\n",
- cur_trb,
- (unsigned long long)xhci_trb_virt_to_dma(cur_seg, cur_trb),
- cur_seg,
- (unsigned long long)cur_seg->dma);
+ xhci_dbg(xhci, "TRB to noop at offset 0x%llx\n",
+ (unsigned long long)
+ xhci_trb_virt_to_dma(cur_seg, cur_trb));
}
if (cur_trb == cur_td->last_trb)
break;
@@ -697,9 +694,9 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci,
*/
list_for_each(entry, &ep->cancelled_td_list) {
cur_td = list_entry(entry, struct xhci_td, cancelled_td_list);
- xhci_dbg(xhci, "Cancelling TD starting at %p, 0x%llx (dma).\n",
- cur_td->first_trb,
- (unsigned long long)xhci_trb_virt_to_dma(cur_td->start_seg, cur_td->first_trb));
+ xhci_dbg(xhci, "Removing canceled TD starting at 0x%llx (dma).\n",
+ (unsigned long long)xhci_trb_virt_to_dma(
+ cur_td->start_seg, cur_td->first_trb));
ep_ring = xhci_urb_to_transfer_ring(xhci, cur_td->urb);
if (!ep_ring) {
/* This shouldn't happen unless a driver is mucking
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 0968b856ef0a..f3d0b8d96440 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1333,9 +1333,6 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
goto done;
}
- xhci_dbg(xhci, "Cancel URB %p\n", urb);
- xhci_dbg(xhci, "Event ring:\n");
- xhci_debug_ring(xhci, xhci->event_ring);
ep_index = xhci_get_endpoint_index(&urb->ep->desc);
ep = &xhci->devs[urb->dev->slot_id]->eps[ep_index];
ep_ring = xhci_urb_to_transfer_ring(xhci, urb);
@@ -1344,12 +1341,18 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
goto done;
}
- xhci_dbg(xhci, "Endpoint ring:\n");
- xhci_debug_ring(xhci, ep_ring);
-
urb_priv = urb->hcpriv;
-
- for (i = urb_priv->td_cnt; i < urb_priv->length; i++) {
+ i = urb_priv->td_cnt;
+ if (i < urb_priv->length)
+ xhci_dbg(xhci, "Cancel URB %p, dev %s, ep 0x%x, "
+ "starting at offset 0x%llx\n",
+ urb, urb->dev->devpath,
+ urb->ep->desc.bEndpointAddress,
+ (unsigned long long) xhci_trb_virt_to_dma(
+ urb_priv->td[i]->start_seg,
+ urb_priv->td[i]->first_trb));
+
+ for (; i < urb_priv->length; i++) {
td = urb_priv->td[i];
list_add_tail(&td->cancelled_td_list, &ep->cancelled_td_list);
}