On Fri, Dec 15, 2023 at 02:57:07PM +0200, Mathias Nyman wrote:
> During device enumeration usb core resets endpoint 0 if the max packet
> size value differs from the one read from the device descriptor.
>
> usb core will additionally reset endpoint 0 during S4 resume, before
> re-enumerating the device, if the device has a reset-resume flag set.
>
> In this case the xhci device representation vdev may be lost due to
> xHC restore error and re-initialization during S4 resume.
>
> Make sure slot_id and vdev are valid before trying to re-configure max
> packet size during endpoint 0 reset.
> max packet size will be re-configured later during re-enumeration.
>
> This fixes commit e34900f46cd6 ("xhci: Reconfigure endpoint 0 max packet
> size only during endpoint reset") which is currently in usb-next,
> on its way to 6.7
You mean "6.8" here, right?
thanks,
greg k-h
