Re: [PATCH v4 3/4] usb: xhci: Use update_device overrides for tunnel reporting

[Konrad Dybcio]

On 10/3/26 2:30 AM, Thinh Nguyen wrote:
> On Tue, Sep 29, 2026, Konrad Dybcio wrote:
>> From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
>>
>> The Thunderbolt framework relies on USB core device links for tunneled
>> ports, so it needs tunnel state when xHCI updates a device.
>>
>> Use the .update_device override for controller-specific tunnel
>> reporting.
>>
>> Assisted-by: LLM
>> Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
>> ---

[...]

>>  #define	XHCI_CFC_DELAY		10
>> @@ -1981,15 +1982,18 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex,
>>  int xhci_hub_status_data(struct usb_hcd *hcd, char *buf);
>>  int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1);
>>  struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd);
>> -enum usb_link_tunnel_mode xhci_port_is_tunneled(struct xhci_hcd *xhci,
>> -						struct xhci_port *port);
>>  void xhci_hc_died(struct xhci_hcd *xhci);
>>  
>>  #ifdef CONFIG_PM
>> +int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev);
> 
> Why are we putting this inside this PM guard?

It's like that in the original code, before moving xhci_update_device()
out of its current place

Konrad