Should xhci_irq() call usb_hc_died()?

[Bjorn Helgaas]

Hi Mathias,

ehci_irq(), ohci_irq(), fotg210_irq(), and oxu210_hcd_irq() contain code
equivalent to this:

  status = ehci_readl(...);
  if (status == ~(u32) 0) {
    ...
    usb_hc_died(hcd);
    ...
    return IRQ_HANDLED;
  }

xhci_irq() has a similar check, but does not call usb_hc_died():

  status = readl(...);
  if (status = 0xffffffff) {
    ...
    return IRQ_HANDLED;
  }

Should xhci_irq() also call usb_hc_died()?  Maybe there's some reason
for it to be different than the others, but it wasn't obvious to this
casual observer :)

Bjorn