linux-kernel - Re: [PATCH] Add Etron XHCI quirk to avoid warning spam

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Date:	Fri, 27 Jul 2012 14:40:56 +0800
From:	Daniel J Blueman <daniel@...ra.org>
To:	Sarah Sharp <sarah.a.sharp@...ux.intel.com>
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] Add Etron XHCI quirk to avoid warning spam

On 27 July 2012 14:14, Sarah Sharp <sarah.a.sharp@...ux.intel.com> wrote:
> On Fri, Jul 27, 2012 at 12:03:44PM +0800, Daniel J Blueman wrote:
>> When various USB3 devices with Etron XHCI controllers, we see a bunch of
>> warnings:
>> xhci_hcd 0000:02:00.0: WARN Successful completion on short TX: needs
>> XHCI_TRUST_TX_LENGTH quirk?
>>
>> Acknowledge the issue by adding the quirk.
>>
>> Signed-off-by: Daniel J Blueman <daniel@...ra.org>
[]
> I already have a patch in my queue for this.  However, it keys off the
> PCI_DEVICE_ID_ASROCK_P67 PCI device ID.  Do you have another Etron
> device with a different device ID that needs this quirk?

Yes, the subsystem ID is different [1] (but Zotac program it the same
as the vendor and device IDs here), however what you say suggests the
problem is general to this Etron XHCI controller (1b6f:7023), as we'd
suspect anyway.

Thus the more general patch I posted makes better sense perhaps?

Thanks,
  Daniel

--- [1]

# lspci -vs 02:00.0
02:00.0 USB controller: Etron Technology, Inc. EJ168 USB 3.0 Host
Controller (rev 01) (prog-if 30 [XHCI])
	Subsystem: Etron Technology, Inc. EJ168 USB 3.0 Host Controller
[]
# lspci -vns 02:00.0
02:00.0 0c03: 1b6f:7023 (rev 01) (prog-if 30 [XHCI])
	Subsystem: 1b6f:7023
-- 
Daniel J Blueman
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