s3 i9305 driver.c

#define DO_UNBIND   0
#define DO_REBIND   1

/* Unbind drivers for @udev's interfaces that don't support suspend/resume,
 * or rebind interfaces that have been unbound, according to @action.
 *
 * The caller must hold @udev's device lock.
 */
static void do_unbind_rebind(struct usb_device *udev, int action)
{
    struct usb_host_config  *config;
    int         i;
    struct usb_interface    *intf;
    struct usb_driver   *drv;

    config = udev->actconfig;
    if (config) {
        for (i = 0; i < config->desc.bNumInterfaces; ++i) {
            intf = config->interface[i];
            switch (action) {
            case DO_UNBIND:
                if (intf->dev.driver) {
                    drv = to_usb_driver(intf->dev.driver);
                    if (!drv->suspend || !drv->resume)
                        usb_forced_unbind_intf(intf);
                }
                break;
            case DO_REBIND:
                if (intf->needs_binding)
                    usb_rebind_intf(intf);
                break;
            }
        }
    }
}