alchemy_usb_control
return alchemy_usb_control(ALCHEMY_USB_EHCI0, 1);
alchemy_usb_control(ALCHEMY_USB_EHCI0, 0);
return alchemy_usb_control(unit, 1);
alchemy_usb_control(unit, 0);
EXPORT_SYMBOL_GPL(alchemy_usb_control);
int alchemy_usb_control(int block, int enable);