linux-kernel - Re: xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 2 comp

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Message-ID: <20150724135332.2022.qmail@stuge.se>
Date:	Fri, 24 Jul 2015 15:53:32 +0200
From:	Peter Stuge <peter@...ge.se>
To:	Mathias Nyman <mathias.nyman@...ux.intel.com>
Cc:	arekm@...en.pl, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not
	part of current TD ep_index 2 comp_code 1

Mathias Nyman wrote:
> +++ b/drivers/usb/host/xhci-ring.c
> @@ -82,7 +82,7 @@ dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg,
>                 return 0;
>         /* offset in TRBs */
>         segment_offset = trb - seg->trbs;
> -       if (segment_offset > TRBS_PER_SEGMENT)
> +       if (segment_offset > TRBS_PER_SEGMENT - 1)

Maybe change the > comparison to >= rather than add the extra "- 1"?


//Peter
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