[PATCH v4] usb: ehci-hcd: notify phy when connect change

[Chen Peter-B29397]

> 
> > It still has below limitations:
> > - it does not work for multi-phy ehci
> > - the best place is after debounce, but I can't get
> >   phy there
> 
> > +			/* FIXME:
> > +			 * - it does not work for multi-phy ehci
> > +			 * - the best place is after debounce, but I can't get
> > +			 *   phy there
> > +			 */
> > +			if (unlikely(ehci->transceiver &&
> > +					(pstatus & PORT_CSC))) {
> 
> A new thought...  If you move the transceiver pointer from struct
> ehci_hcd to struct usb_hcd, then you _will_ be able to get at it from
> within the debouncing routine.
> 
Good suggestion, after that the driver can add PHY operation(quirk or not)
during the whole usb host life periods.

> Or if you prefer, leave the pointer where it is and add a method to
> struct hc_driver for retrieving the pointer.
> 
> Alan Stern
>