Re: [PATCH v3 1/1] usb: hub: Fix auto-remount of safely removed or ejected USB-3 devices

[Mathias Nyman <mathias.nyman@linux.intel.com>]

On 17.11.2016 11:26, Greg KH wrote:
> On Thu, Nov 17, 2016 at 11:14:14AM +0200, Mathias Nyman wrote:
>> USB-3 does not have any link state that will avoid negotiating a connection
>> with a plugged-in cable but will signal the host when the cable is
>> unplugged.
>>
>> For USB-3 we used to first set the link to Disabled, then to RxDdetect to
>> be able to detect cable connects or disconnects. But in RxDetect the
>> connected device is detected again and eventually enabled.
>>
>> Instead set the link into U3 and disable remote wakeups for the device.
>> This is what Windows does, and what Alan Stern suggested.
>>
>> Cc: stable@vger.kernel.org
>> Cc: Alan Stern <stern@rowland.harvard.edu>
>> Acked-by: Alan Stern <stern@rowland.harvard.edu>
>> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
>
> Can I put this in -next and get it some testing before going to Linus
> for 4.10-rc1, or do you think it needs to get into 4.9-final due to
> people complaining about this?  If so, is it a regression or just
> something that we have never done before (I think the latter, but want
> to make sure...)
>

Latter, -next is fine.

I think this has always been an issue with usb3.
I found bugs from 2011 where users complained about this.

-Mathias