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Date:   Mon, 18 Sep 2017 11:06:29 +0300
From:   Mathias Nyman <>
To:     Kai-Heng Feng <>,
        Mathias Nyman <>
Cc:     Greg KH <>,,
        USB list <>,
        LKML <>,
        "Tsai, Nicholas" <>,
        Nehal Shah <>,
        Ramkumar Subramaniyan <>
Subject: Re: [PATCH] Revert "xhci: Limit USB2 port wake support for AMD
 Promontory hosts"

On 16.09.2017 07:49, Kai-Heng Feng wrote:
> On Mon, Aug 28, 2017 at 9:56 PM, Kai-Heng Feng
> <> wrote:
>> On Mon, Aug 28, 2017 at 6:14 PM, Mathias Nyman
>> <> wrote:
>>> On 28.08.2017 12:29, Greg KH wrote:
>>> Adding more people who were involved in the original patch.
>>> Users are now seeing the unresponsive USB2 ports with Promontory hosts.
>>> Is there any update on a better way to solve the original issue.
>>> To me a "dead" USB2 port seems like a much worse issue for a user
>>> than a BIOS disabled port waking up on plug/unplug (wake on
>>> connect/disconnect),
>>> so I'm myself in favor of doing this revert.
>> At least I can't find "Disable USB2" on my ASUS PRIME B350M-A, so the
>> new behavior is quite surprising.
>>> But there was a strong push from Promontory developers to get the original
>>> fix in,
>>> and I would like to get some comment from them before I do anything about
>>> it.
>> You looped them to the mail thread which I reported the regression two
>> weeks ago, and there is no response since then...
> Still no response from AMD and ASMedia guys.
> I don't like to use out-of-tree patches for myself, but probably it's
> the only way here?

I'll revert it and send it forward now since rc1 is out


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