USB: gadget driver unbind() is optional; section fixes; misc

[linux-2.6] / drivers / usb / gadget / dummy_hcd.c

diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index f1f32d7be5f929d022660952c18d8e11b202e4dd..3c2bc075ef4f31260ddadaa659e7ea840b2e0d1c 100644 (file)
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -779,7 +779,7 @@ usb_gadget_register_driver (struct usb_gadget_driver *driver)
                return -EINVAL;
        if (dum->driver)
                return -EBUSY;
-       if (!driver->bind || !driver->unbind || !driver->setup
+       if (!driver->bind || !driver->setup
                        || driver->speed == USB_SPEED_UNKNOWN)
                return -EINVAL;
 
@@ -837,7 +837,8 @@ usb_gadget_register_driver (struct usb_gadget_driver *driver)
 err_bind_driver:
        driver_unregister (&driver->driver);
 err_register:
-       driver->unbind (&dum->gadget);
+       if (driver->unbind)
+               driver->unbind (&dum->gadget);
        spin_lock_irq (&dum->lock);
        dum->pullup = 0;
        set_link_state (dum);
@@ -857,7 +858,7 @@ usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
 
        if (!dum)
                return -ENODEV;
-       if (!driver || driver != dum->driver)
+       if (!driver || driver != dum->driver || !driver->unbind)
                return -EINVAL;
 
        dev_dbg (udc_dev(dum), "unregister gadget driver '%s'\n",