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xhci: Log extra info on "ERROR Transfer event TRB DMA ptr not part of current TD"

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Lately (with the use of uas / bulk-streams) we have been seeing several
cases where this error triggers (which should never happen).

Add some extra logging to make debugging these errors easier.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hans de Goede
2014-08-20 16:41:51 +03:00
committed by Greg Kroah-Hartman
parent f85c9fb62c
commit cffb9be80f
3 changed files with 27 additions and 9 deletions
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4
drivers/usb/host/xhci-mem.c
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@@ -1904,7 +1904,7 @@ static int xhci_test_trb_in_td(struct xhci_hcd *xhci,
start_dma = xhci_trb_virt_to_dma(input_seg, start_trb);
end_dma = xhci_trb_virt_to_dma(input_seg, end_trb);
seg = trb_in_td(input_seg, start_trb, end_trb, input_dma);
seg = trb_in_td(xhci, input_seg, start_trb, end_trb, input_dma, false);
if (seg != result_seg) {
xhci_warn(xhci, "WARN: %s TRB math test %d failed!\n",
test_name, test_number);
@@ -1918,6 +1918,8 @@ static int xhci_test_trb_in_td(struct xhci_hcd *xhci,
end_trb, end_dma);
xhci_warn(xhci, "Expected seg %p, got seg %p\n",
result_seg, seg);
trb_in_td(xhci, input_seg, start_trb, end_trb, input_dma,
true);
return -1;
}
return 0;