/* disconnect kernel driver from interface */
case USBDEVFS_DISCONNECT:
/* don't allow the user to unbind the hub driver from
* a hub with children to manage */
for (i = 0; i < ps->dev->maxchild; ++i) {
if (ps->dev->children[i])
retval = -EBUSY;
}
if (retval)
break;
down_write(&usb_bus_type.subsys.rwsem);
This seems like a race condition if the semaphore is down.
Maybe we should disallow disconnecting the hub driver altogether.
Regards
Oliver
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