RE: [PATCH 2/3] xhci: Log ep-index and comp-code on TRB DMA ptr not part of current TD

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From: Hans de Goede
> These errors should never happen, so lets add some extra info when they happen
> to make figuring out what is going on easier.

I've previously posted a patch that include the 'DMA ptr' itself.
IIRC I was generating one of the error events where the pointer is
the address of a command ring entry.
(I think I was using the wrong type of NOP command.)

	David

> 
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> ---
>  drivers/usb/host/xhci-ring.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
> index 749fc68..5542dfe 100644
> --- a/drivers/usb/host/xhci-ring.c
> +++ b/drivers/usb/host/xhci-ring.c
> @@ -2504,7 +2504,9 @@ static int handle_tx_event(struct xhci_hcd *xhci,
>  				/* HC is busted, give up! */
>  				xhci_err(xhci,
>  					"ERROR Transfer event TRB DMA ptr not "
> -					"part of current TD\n");
> +					"part of current TD ep_index %d "
> +					"comp_code %u\n", ep_index,
> +					trb_comp_code);
>  				return -ESHUTDOWN;
>  			}
> 
> --
> 2.0.1
> 
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