diff options
Diffstat (limited to 'drivers/usb/gadget/dummy_hcd.c')
| -rw-r--r-- | drivers/usb/gadget/dummy_hcd.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index f1f32d7be5f..3c2bc075ef4 100644 --- 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", |