+ /* by now, 440epx is known to show usb_23 erratum */
+ np = of_find_compatible_node(NULL, NULL, "ibm,usb-ehci-440epx");
+
+ /* Work around - At this point ohci_run has executed, the
+ * controller is running, everything, the root ports, etc., is
+ * set up. If the ehci driver is loaded, put the ohci core in
+ * the suspended state. The ehci driver will bring it out of
+ * suspended state when / if a non-high speed USB device is
+ * attached to the USB Host port. If the ehci driver is not
+ * loaded, do nothing. request_mem_region is used to test if
+ * the ehci driver is loaded.
+ */
+ if (np != NULL) {
+ if (!of_address_to_resource(np, 0, &res)) {
+ if (!request_mem_region(res.start, 0x4, hcd_name)) {
+ writel_be((readl_be(&ohci->regs->control) |
+ OHCI_USB_SUSPEND), &ohci->regs->control);
+ (void) readl_be(&ohci->regs->control);
+ } else
+ release_mem_region(res.start, 0x4);
+ } else
+ pr_debug("%s: cannot get ehci offset from fdt\n", __FILE__);
+ }
+