RE: [PATCH v2] usb: xhci: Don't drive port 2.0 reset while resuming

[Alan Stern]

On Wed, 26 Oct 2016, Sriram Dash wrote:

> >From: Mathias Nyman [mailto:mathias.nyman@xxxxxxxxxxxxxxx]

> >I don't think usb core tries to drive reset while port is still resuming
> >
> 
> I am skeptical about it and hope somebody may help us on this.

You can see for yourself.  In drivers/usb/core/hub.c, the 
usb_reset_device() routine calls usb_autoresume_device() before calling 
usb_reset_and_verify_device().  Therefore the port will have finished
resuming before the reset signal is sent.

Alan Stern