linux-kernel - Re: [PATCH] xhci-pci: Set AMD Renoir USB controller to D3 when shutdown

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Date:   Mon, 22 Feb 2021 13:56:13 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     Aaron Ma <aaron.ma@...onical.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mathias Nyman <mathias.nyman@...ux.intel.com>,
        Alan Stern <stern@...land.harvard.edu>,
        Lee Jones <lee.jones@...aro.org>, peter.chen@....com,
        USB list <linux-usb@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Linux PCI <linux-pci@...r.kernel.org>
Subject: Re: [PATCH] xhci-pci: Set AMD Renoir USB controller to D3 when shutdown

On Fri, Feb 19, 2021 at 4:07 PM Aaron Ma <aaron.ma@...onical.com> wrote:
>
>
>
> On 2/11/21 8:50 PM, Greg Kroah-Hartman wrote:
> > On Wed, Feb 10, 2021 at 03:13:30PM +0200, Mathias Nyman wrote:
> >> On 9.2.2021 10.37, Greg Kroah-Hartman wrote:
> >>> On Fri, Feb 05, 2021 at 02:50:15PM +0800, Kai-Heng Feng wrote:
> >>>> On Fri, Feb 5, 2021 at 2:45 PM Aaron Ma <aaron.ma@...onical.com> wrote:
> >>>>>
> >>>>>
> >>>>> On 2/5/21 12:27 PM, Kai-Heng Feng wrote:
> >>>>>> Can you please test the following patch, which should address the root cause:
> >>>>>> https://lore.kernel.org/linux-acpi/20201201213019.1558738-1-furquan@google.com/
> >>>>>>
> >>>>>> It also helps another AMD laptop on S5:
> >>>>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1912935
> >>>>>>
> >>>>>
> >>>>> No, this patch doesn't help on ThinkPad AMD platform.
> >>>>
> >>>> Thanks for the confirmation!
> >>>>
> >>>> Acked-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
> >>>
> >>> Mathias, want me to take this in my tree now, or are you going to send
> >>> me more patches for 5.12-rc1?
> >>>
> >>
> >> Nothing more for 5.12-rc1 from me.
> >>
> >> Could this be a PCI quirk instead of xhci?
> >> Maybe there is some PCI flag for this already, haven't checked yet.
> >>
> >> We want a specific PCI device to go to PCI D3cold at PCI shutdown...
> >
> > There probably is.  Kay-Heng, can you look into doing that instead?
> >
>
> There is no such PCI quirk, usually it calls driver to shutdown.

Let me work on it. There are other devices need to be in D3 for
shutdown, a generic approach across all devices will be better.

Kai-Heng

>
> Regards,
> Aaron
>
> > thanks,
> >
> > greg k-h
> >