+#define MASK_BITS (USB_PORT_STAT_POWER | USB_PORT_STAT_CONNECTION | \
+ USB_PORT_STAT_SUSPEND)
+#define WANT_BITS (USB_PORT_STAT_POWER | USB_PORT_STAT_CONNECTION)
+
+/* Determine whether the device on a port is ready for a normal resume,
+ * is ready for a reset-resume, or should be disconnected.
+ */
+static int check_port_resume_type(struct usb_device *udev,
+ struct usb_hub *hub, int port1,
+ int status, unsigned portchange, unsigned portstatus)
+{
+ /* Is the device still present? */
+ if (status || (portstatus & MASK_BITS) != WANT_BITS) {
+ if (status >= 0)
+ status = -ENODEV;
+ }
+
+ /* Can't do a normal resume if the port isn't enabled */
+ else if (!(portstatus & USB_PORT_STAT_ENABLE) && !udev->reset_resume)
+ status = -ENODEV;
+
+ if (status) {
+ dev_dbg(hub->intfdev,
+ "port %d status %04x.%04x after resume, %d\n",
+ port1, portchange, portstatus, status);
+ } else if (udev->reset_resume) {
+
+ /* Late port handoff can set status-change bits */
+ if (portchange & USB_PORT_STAT_C_CONNECTION)
+ clear_port_feature(hub->hdev, port1,
+ USB_PORT_FEAT_C_CONNECTION);
+ if (portchange & USB_PORT_STAT_C_ENABLE)
+ clear_port_feature(hub->hdev, port1,
+ USB_PORT_FEAT_C_ENABLE);
+ }
+
+ return status;
+}
+