diff options
Diffstat (limited to 'drivers/usb/gadget/composite.c')
| -rw-r--r-- | drivers/usb/gadget/composite.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 60f9272ae6..d0ee7847b9 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1077,6 +1077,8 @@ static struct usb_gadget_driver composite_driver = { */ int usb_composite_register(struct usb_composite_driver *driver) { + int res; + if (!driver || !driver->dev || !driver->bind || composite) return -EINVAL; @@ -1084,7 +1086,11 @@ int usb_composite_register(struct usb_composite_driver *driver) driver->name = "composite"; composite = driver; - return usb_gadget_register_driver(&composite_driver); + res = usb_gadget_register_driver(&composite_driver); + if (res != 0) + composite = NULL; + + return res; } /** |