9  * The driver connects to the kernel hardware RNG interface to provide
75 	struct usb_interface *interface;  member
97 		usb_dbg(dev->interface, "free");  in chaoskey_free()
101 		usb_put_intf(dev->interface);  in chaoskey_free()
106 static int chaoskey_probe(struct usb_interface *interface,  in chaoskey_probe()  argument
109 	struct usb_device *udev = interface_to_usbdev(interface);  in chaoskey_probe()
110 	struct usb_host_interface *altsetting = interface->cur_altsetting;  in chaoskey_probe()
118 	usb_dbg(interface, "probe %s-%s", udev->product, udev->serial);  in chaoskey_probe()
123 		usb_dbg(interface, "no IN endpoint found");  in chaoskey_probe()
132 		usb_dbg(interface, "invalid size (%d)", size);  in chaoskey_probe()
137 		usb_dbg(interface, "size reduced from %d to %d\n",  in chaoskey_probe()
149 	dev->interface = usb_get_intf(interface);  in chaoskey_probe()
193 	usb_set_intfdata(interface, dev);  in chaoskey_probe()
195 	result = usb_register_dev(interface, &chaoskey_class);  in chaoskey_probe()
197 		usb_err(interface, "Unable to allocate minor number.");  in chaoskey_probe()
207 		usb_err(interface, "Unable to register with hwrng");  in chaoskey_probe()
211 	usb_dbg(interface, "chaoskey probe success, size %d", dev->size);  in chaoskey_probe()
215 	usb_set_intfdata(interface, NULL);  in chaoskey_probe()
220 static void chaoskey_disconnect(struct usb_interface *interface)  in chaoskey_disconnect()  argument
224 	usb_dbg(interface, "disconnect");  in chaoskey_disconnect()
225 	dev = usb_get_intfdata(interface);  in chaoskey_disconnect()
227 		usb_dbg(interface, "disconnect failed - no dev");  in chaoskey_disconnect()
234 	usb_deregister_dev(interface, &chaoskey_class);  in chaoskey_disconnect()
236 	usb_set_intfdata(interface, NULL);  in chaoskey_disconnect()
248 	usb_dbg(interface, "disconnect done");  in chaoskey_disconnect()
254 	struct usb_interface *interface;  in chaoskey_open()  local
256 	/* get the interface from minor number and driver information */  in chaoskey_open()
257 	interface = usb_find_interface(&chaoskey_driver, iminor(inode));  in chaoskey_open()
258 	if (!interface)  in chaoskey_open()
261 	usb_dbg(interface, "open");  in chaoskey_open()
263 	dev = usb_get_intfdata(interface);  in chaoskey_open()
265 		usb_dbg(interface, "open (dev)");  in chaoskey_open()
274 	usb_dbg(interface, "open success");  in chaoskey_open()
281 	struct usb_interface *interface;  in chaoskey_release()  local
286 	interface = dev->interface;  in chaoskey_release()
288 	usb_dbg(interface, "release");  in chaoskey_release()
292 	usb_dbg(interface, "open count at release is %d", dev->open);  in chaoskey_release()
295 		usb_dbg(interface, "invalid open count (%d)", dev->open);  in chaoskey_release()
311 	usb_dbg(interface, "release success");  in chaoskey_release()
320 	usb_dbg(dev->interface, "callback status (%d)", status);  in chaos_read_callback()
344 	usb_dbg(dev->interface, "fill");  in _chaoskey_fill()
349 		usb_dbg(dev->interface, "not empty yet (valid %d used %d)",  in _chaoskey_fill()
356 		usb_dbg(dev->interface, "device not present");  in _chaoskey_fill()
361 	result = usb_autopm_get_interface(dev->interface);  in _chaoskey_fill()
363 		usb_dbg(dev->interface, "wakeup failed (result %d)", result);  in _chaoskey_fill()
400 	usb_autopm_put_interface(dev->interface);  in _chaoskey_fill()
402 	usb_dbg(dev->interface, "read %d bytes", dev->valid);  in _chaoskey_fill()
423 	usb_dbg(dev->interface, "read %zu", count);  in chaoskey_read()
427 		/* Grab the rng_lock briefly to ensure that the hwrng interface  in chaoskey_read()
470 		usb_dbg(dev->interface, "read %zu bytes", read_count);  in chaoskey_read()
473 	usb_dbg(dev->interface, "empty read, result %d", result);  in chaoskey_read()
485 	usb_dbg(dev->interface, "rng_read max %zu wait %d", max, wait);  in chaoskey_rng_read()
488 		usb_dbg(dev->interface, "device not present");  in chaoskey_rng_read()
519 	usb_dbg(dev->interface, "rng_read this_time %d\n", this_time);  in chaoskey_rng_read()
524 static int chaoskey_suspend(struct usb_interface *interface,  in chaoskey_suspend()  argument
527 	usb_dbg(interface, "suspend");  in chaoskey_suspend()
531 static int chaoskey_resume(struct usb_interface *interface)  in chaoskey_resume()  argument
534 	struct usb_device *udev = interface_to_usbdev(interface);  in chaoskey_resume()
536 	usb_dbg(interface, "resume");  in chaoskey_resume()
537 	dev = usb_get_intfdata(interface);  in chaoskey_resume()