linux-kernel - Re: [PATCH v2 3/3] USB: Disable LPM on WD19's Realtek Hub

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Message-ID: <CAAd53p6vGpv0L+XFa1raA2HzO+3LYvHwPW968CEuW8aDbNC7BQ@mail.gmail.com>
Date:   Mon, 13 Jan 2020 17:06:53 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        Alan Stern <stern@...land.harvard.edu>,
        AceLan Kao <acelan.kao@...onical.com>,
        USB list <linux-usb@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/3] USB: Disable LPM on WD19's Realtek Hub

On Sun, Jan 12, 2020 at 4:01 AM Greg KH <gregkh@...uxfoundation.org> wrote:
>
> On Fri, Jan 10, 2020 at 04:02:11PM +0800, Kai-Heng Feng wrote:
> > Realtek Hub (0bda:0x0487) used in Dell Dock WD19 sometimes drops off the
> > bus when bringing underlying ports from U3 to U0.
> >
> > Disabling LPM on the hub during setting link state is not enough, so
> > let's disable LPM completely for this hub.
> >
> > Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
> > ---
> >  drivers/usb/core/quirks.c | 3 +++
> >  1 file changed, 3 insertions(+)
>
> What changed from v1?  Always put that below the --- line.
>
> Also I only see 1 patch here, what happened to the first two?

The first two are can be actually treat separately, since they are
more generic fixes for xHCI.

>
> Please resend the whole series, and properly document what went on, you
> know this...

I forgot that, will do in next version.

Kai-Heng

>
> thanks,
>
> greg k-h