> > On Mon, 9 Apr 2012, Peter Chen wrote: > > > I have run this patch at FSL board, > > Using which driver? > This driver has still not mainlined, it implement low power mode at bus suspend, the controller suspend is for ID switch and adjust wakeup flag during system suspend routine. > > and found the kernel is hang at reading > > portsc of above code, the reason is controller is off after bus suspend. > I > > have checked the ehci-tegra.c, it also powers off its controller at bus > > suspend, maybe there are other controllers also do that. > > Then we need to fix the drivers. The controller power is supposed to > be turned off during controller suspend, not during bus suspend. > I agreee. > As far as I can see, ehci-tegra.c is the only EHCI driver which > doesn't use ehci_bus_suspend as its bus_suspend routine. > > On the other hand, this probably means the patch series should not be > merged into the stable kernel trees. > > Alan Stern > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
