Re: [PATCH] usbnet: prevent device rpm suspend in usbnet_probe function

From: BjÃrn Mork
Date: Thu Nov 10 2016 - 06:11:22 EST


Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> writes:
> On Wed, Nov 9, 2016 at 8:32 PM, BjÃrn Mork <bjorn@xxxxxxx> wrote:
>> Oliver Neukum <oneukum@xxxxxxxx> writes:
>>
>>> On Tue, 2016-11-08 at 13:44 -0500, Alan Stern wrote:
>>>
>>>> These problems could very well be caused by running at SuperSpeed
>>>> (USB-3) instead of high speed (USB-2).
>
> Yes, it's running at SuperSpeed, on a Kabylake laptop.
>
> It does not have this issue on a Broadwell laptop, also running at SuperSpeed.

Then I must join Oliver, being very surprised by where in the stack you
attempt to fix the issue. What you write above indicates a problem in
pci bridge or usb host controller, doesn't it?


BjÃrn