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

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Message-ID: <00de6927-3fa6-a9a3-2d65-2b4d4e8f0012@linux.intel.com>
Date:   Wed, 10 Feb 2021 15:13:30 +0200
From:   Mathias Nyman <mathias.nyman@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>
Cc:     Aaron Ma <aaron.ma@...onical.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 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...

If not, then adding this to xhci is fine for me as well

Thanks
-Mathias