linux-kernel - RE: [PATCH] USB: Fix the issue of task recovery failure caused by USB status when S4 wakes up

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Message-ID: <DS0PR11MB74570B2F9CB54FADA323CDE9E3462@DS0PR11MB7457.namprd11.prod.outlook.com>
Date: Wed, 16 Oct 2024 08:57:35 +0000
From: "Gopal, Saranya" <saranya.gopal@...el.com>
To: duanchenghao <duanchenghao@...inos.cn>, Alan Stern
	<stern@...land.harvard.edu>
CC: "Rafael J. Wysocki" <rafael@...nel.org>, Hongyu Xie <xy521521@...il.com>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"niko.mauno@...sala.com" <niko.mauno@...sala.com>, "pavel@....cz"
	<pavel@....cz>, "stanley_chang@...ltek.com" <stanley_chang@...ltek.com>,
	"tj@...nel.org" <tj@...nel.org>, Hongyu Xie <xiehongyu1@...inos.cn>
Subject: RE: [PATCH] USB: Fix the issue of task recovery failure caused by USB
 status when S4 wakes up

Hi Duan Chenghao,

> -----Original Message-----
> From: duanchenghao <duanchenghao@...inos.cn>
> Sent: Monday, October 14, 2024 7:11 AM
> To: Alan Stern <stern@...land.harvard.edu>; Gopal, Saranya
> <saranya.gopal@...el.com>
> Cc: Rafael J. Wysocki <rafael@...nel.org>; Hongyu Xie
> <xy521521@...il.com>; gregkh@...uxfoundation.org; linux-
> kernel@...r.kernel.org; linux-pm@...r.kernel.org; linux-
> usb@...r.kernel.org; niko.mauno@...sala.com; pavel@....cz;
> stanley_chang@...ltek.com; tj@...nel.org; Hongyu Xie
> <xiehongyu1@...inos.cn>
> Subject: Re: [PATCH] USB: Fix the issue of task recovery failure caused
> by USB status when S4 wakes up
> 
> 在 2024-10-12星期六的 11:01 -0400，Alan Stern写道：
> Hi Saranya,
> 
> > On Sat, Oct 12, 2024 at 05:51:41PM +0800, duanchenghao wrote:
> > >
> > > Hi Alan,
> > >
> > > The V3 patch has been sent. Please review it to check if it aligns
> > > with
> > > the solution you described.
> >
> > Yes, that is what I meant.
> >
> > Have you and all the other people at kylinos.cn tested the patch to
> > make
> > sure that it fixes the problem?
> >
> > Alan Stern
> 
> If you have time, you can arrange to test your issue using the V3
> version. This way, we can jointly verify whether the problem has been
> resolved.
> 
My testing completed today.
I couldn't reproduce the issue when I ran 1500 S4 cycles with v3 version of your patch.
The issue was anyway rare before with an occurrence rate of 20/1500 cycles in our system.
So, please conclude after verifying from your side also.

Thanks,
Saranya

> Thanks
> Duan Chenghao
> 
>