diff options
| -rw-r--r-- | drivers/usb/gadget/dummy_hcd.c | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index fdab97a27c0..4d2946e540c 100644 --- a/drivers/usb/gadget/dummy_hcd.c +++ b/drivers/usb/gadget/dummy_hcd.c @@ -816,15 +816,14 @@ usb_gadget_register_driver (struct usb_gadget_driver *driver) dum->gadget.dev.driver = &driver->driver; dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n", driver->driver.name); - if ((retval = driver->bind (&dum->gadget)) != 0) { - dum->driver = NULL; - dum->gadget.dev.driver = NULL; - return retval; - } + if ((retval = driver->bind (&dum->gadget)) != 0) + goto err_bind_gadget; driver->driver.bus = dum->gadget.dev.parent->bus; - driver_register (&driver->driver); - device_bind_driver (&dum->gadget.dev); + if ((retval = driver_register (&driver->driver)) != 0) + goto err_register; + if ((retval = device_bind_driver (&dum->gadget.dev)) != 0) + goto err_bind_driver; /* khubd will enumerate this in a while */ spin_lock_irq (&dum->lock); @@ -834,6 +833,19 @@ usb_gadget_register_driver (struct usb_gadget_driver *driver) usb_hcd_poll_rh_status (dummy_to_hcd (dum)); return 0; + +err_bind_driver: + driver_unregister (&driver->driver); +err_register: + driver->unbind (&dum->gadget); + spin_lock_irq (&dum->lock); + dum->pullup = 0; + set_link_state (dum); + spin_unlock_irq (&dum->lock); +err_bind_gadget: + dum->driver = NULL; + dum->gadget.dev.driver = NULL; + return retval; } EXPORT_SYMBOL (usb_gadget_register_driver); @@ -916,7 +928,9 @@ static int dummy_udc_probe (struct platform_device *pdev) usb_get_hcd (dummy_to_hcd (dum)); platform_set_drvdata (pdev, dum); - device_create_file (&dum->gadget.dev, &dev_attr_function); + rc = device_create_file (&dum->gadget.dev, &dev_attr_function); + if (rc < 0) + device_unregister (&dum->gadget.dev); return rc; } @@ -1864,8 +1878,7 @@ static int dummy_start (struct usb_hcd *hcd) #endif /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ - device_create_file (dummy_dev(dum), &dev_attr_urbs); - return 0; + return device_create_file (dummy_dev(dum), &dev_attr_urbs); } static void dummy_stop (struct usb_hcd *hcd) |