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SubjectRe: [PATCH] xhci: Prevent runtime suspend all the time with XHCI_RESET_ON_RESUME quirk
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> On May 4, 2020, at 17:47, Oliver Neukum <oneukum@suse.com> wrote:
>
> Am Montag, den 04.05.2020, 17:19 +0800 schrieb Kai-Heng Feng:
>> Etron EJ168 USB 3.0 Host Controller stops working after S3, if it was
>> runtime suspended previously:
>> [ 370.080359] pci 0000:02:00.0: can't change power state from D3cold to D0 (config space inaccessible)
>
> Apparently this controller has issues with D3cold
>
>> [ 370.080477] xhci_hcd 0000:04:00.0: can't change power state from D3cold to D0 (config space inaccessible)
>> [ 370.080532] pcieport 0000:00:1c.0: DPC: containment event, status:0x1f05 source:0x0200
>> [ 370.080533] pcieport 0000:00:1c.0: DPC: ERR_FATAL detected
>> [ 370.080536] xhci_hcd 0000:04:00.0: can't change power state from D3hot to D0 (config space inaccessible)
>> [ 370.080552] xhci_hcd 0000:04:00.0: AER: can't recover (no error_detected callback)
>> [ 370.080566] usb usb3: root hub lost power or was reset
>> [ 370.080566] usb usb4: root hub lost power or was reset
>> [ 370.080572] xhci_hcd 0000:04:00.0: Host halt failed, -19
>> [ 370.080574] xhci_hcd 0000:04:00.0: Host not accessible, reset failed.
>> [ 370.080575] xhci_hcd 0000:04:00.0: PCI post-resume error -19!
>> [ 370.080586] xhci_hcd 0000:04:00.0: HC died; cleaning up
>>
>> This can be fixed by not runtime suspend the controller at all.
>>
>> So instead of conditionally runtime suspend the controller, always
>> prevent runtime suspend with XHCI_RESET_ON_RESUME quirk.
>
> What does that do to other controllers that can do runtime suspend
> under the current scheme?

Ok, I'll add a new quirk specific to this controller.

Kai-Heng

>
> Regards
> Oliver
>

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