From: Oliver Neukum <oneukum@suse.com>
To: "Bjørn Mork" <bjorn@mork.no>
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>,
Alan Stern <stern@rowland.harvard.edu>,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
netdev@vger.kernel.org,
Mathias Nyman <mathias.nyman@linux.intel.com>
Subject: Re: [PATCH] usbnet: prevent device rpm suspend in usbnet_probe function
Date: Thu, 10 Nov 2016 12:22:37 +0100 [thread overview]
Message-ID: <1478776957.2428.15.camel@suse.com> (raw)
In-Reply-To: <87a8d7h9q1.fsf@miraculix.mork.no>
On Thu, 2016-11-10 at 12:09 +0100, Bjørn Mork wrote:
> Kai-Heng Feng <kai.heng.feng@canonical.com> writes:
> > On Wed, Nov 9, 2016 at 8:32 PM, Bjørn Mork <bjorn@mork.no> wrote:
> >> Oliver Neukum <oneukum@suse.com> 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?
Indeed. And this means we need an XHCI specialist.
Mathias, we have a failure specific to one implementation of XHCI.
Regards
Oliver
next prev parent reply other threads:[~2016-11-10 11:22 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-04 9:57 [PATCH] usbnet: prevent device rpm suspend in usbnet_probe function Kai-Heng Feng
2016-11-04 13:26 ` Alan Stern
2016-11-07 10:32 ` Oliver Neukum
2016-11-07 11:02 ` Oliver Neukum
2016-11-08 7:46 ` Kai-Heng Feng
2016-11-08 15:25 ` Alan Stern
2016-11-08 16:49 ` Bjørn Mork
2016-11-08 18:44 ` Alan Stern
2016-11-09 11:58 ` Oliver Neukum
2016-11-09 12:32 ` Bjørn Mork
2016-11-10 4:06 ` Kai-Heng Feng
2016-11-10 11:09 ` Bjørn Mork
2016-11-10 11:22 ` Oliver Neukum [this message]
2016-11-11 14:44 ` Mathias Nyman
[not found] ` <5825D962.9090807-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-11-14 7:34 ` Kai-Heng Feng
2016-11-16 10:29 ` Kai-Heng Feng
2016-11-10 15:36 ` Alan Stern
2016-11-10 20:38 ` Bjørn Mork
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