linux-kernel - Re: [BUGREPORT] Linux USB 3.0

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Message-ID: <CA+O4pCKedNsBcLoVP6T0BHT6sq00D+XNHLT790UDgdx-r7TL4Q@mail.gmail.com>
Date:	Sat, 8 Feb 2014 10:00:22 +0100
From:	Markus Rechberger <mrechberger@...il.com>
To:	David Laight <David.Laight@...lab.com>
Cc:	Sarah Sharp <sarah.a.sharp@...ux.intel.com>,
	LKML <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Greg KH <gregkh@...uxfoundation.org>
Subject: Re: [BUGREPORT] Linux USB 3.0

On Tue, Feb 4, 2014 at 10:31 AM, David Laight <David.Laight@...lab.com> wrote:
> From: Markus Rechberger
>> >> Dec 27 23:23:50 solist kernel: [   36.118245] xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA
>> ptr
>> >
>> > These messages might be harmless.  The 3.0 kernel contains a fix for
>> > Intel Panther Point xHCI hosts that suppresses those messages, commit
>> > ad808333d8201d53075a11bc8dd83b81f3d68f0b "Intel xhci: Ignore spurious
>> > successful event."
>> >
>> > A later commit extends that to all xHCI 1.0 hosts, commit
>> > 07f3cb7c28bf3f4dd80bfb136cf45810c46ac474 "usb: host: xhci: Enable
>> > XHCI_SPURIOUS_SUCCESS for all controllers with xhci 1.0"  That was
>> > queued for 3.11 and marked to be backported into stable kernels as old
>> > as 3.0.
>
> I see the same error message on the 0.96 ASMedia controller when
> the rx buffers for the ax88179_178a driver cross 64k boundaries.
>
> So this isn't confined to 1.0 controllers.
>

Sarah,

since there is no response yet, is there anyone at Intel dedicated at
working on USB 3.0?
We are also getting more and more negative USB 3.0 feedback with Linux

Best Regards,
Markus
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