93 static int u2fzero_send(struct u2fzero_device *dev, struct u2f_hid_report *req)  in u2fzero_send()  argument
97 	mutex_lock(&dev->lock);  in u2fzero_send()
99 	memcpy(dev->buf_out, req, sizeof(struct u2f_hid_report));  in u2fzero_send()
101 	ret = hid_hw_output_report(dev->hdev, dev->buf_out,  in u2fzero_send()
104 	mutex_unlock(&dev->lock);  in u2fzero_send()
125 static int u2fzero_recv(struct u2fzero_device *dev,  in u2fzero_recv()  argument
130 	struct hid_device *hdev = dev->hdev;  in u2fzero_recv()
133 	mutex_lock(&dev->lock);  in u2fzero_recv()
135 	memcpy(dev->buf_out, req, sizeof(struct u2f_hid_report));  in u2fzero_recv()
137 	dev->urb->context = &ctx;  in u2fzero_recv()
140 	ret = usb_submit_urb(dev->urb, GFP_NOIO);  in u2fzero_recv()
146 	ret = hid_hw_output_report(dev->hdev, dev->buf_out,  in u2fzero_recv()
157 		usb_kill_urb(dev->urb);  in u2fzero_recv()
160 		ret = dev->urb->actual_length;  in u2fzero_recv()
161 		memcpy(resp, dev->buf_in, ret);  in u2fzero_recv()
165 	mutex_unlock(&dev->lock);  in u2fzero_recv()
172 	struct u2fzero_device *dev = container_of(ldev,  in u2fzero_blink()  local
178 			.cmd = hw_configs[dev->hw_revision].wink_cmd,  in u2fzero_blink()
184 	return u2fzero_send(dev, &req);  in u2fzero_blink()
200 	struct u2fzero_device *dev = container_of(rng,  in u2fzero_rng_read()  local
206 			.cmd = hw_configs[dev->hw_revision].rng_cmd,  in u2fzero_rng_read()
218 	if (!dev->present) {  in u2fzero_rng_read()
219 		hid_dbg(dev->hdev, "device not present");  in u2fzero_rng_read()
223 	ret = u2fzero_recv(dev, &req, &resp);  in u2fzero_rng_read()
238 static int u2fzero_init_led(struct u2fzero_device *dev,  in u2fzero_init_led()  argument
241 	dev->led_name = devm_kasprintf(&dev->hdev->dev, GFP_KERNEL,  in u2fzero_init_led()
243 	if (dev->led_name == NULL)  in u2fzero_init_led()
246 	dev->ldev.name = dev->led_name;  in u2fzero_init_led()
247 	dev->ldev.max_brightness = LED_ON;  in u2fzero_init_led()
248 	dev->ldev.flags = LED_HW_PLUGGABLE;  in u2fzero_init_led()
249 	dev->ldev.brightness_set_blocking = u2fzero_brightness_set;  in u2fzero_init_led()
251 	return devm_led_classdev_register(&dev->hdev->dev, &dev->ldev);  in u2fzero_init_led()
254 static int u2fzero_init_hwrng(struct u2fzero_device *dev,  in u2fzero_init_hwrng()  argument
257 	dev->rng_name = devm_kasprintf(&dev->hdev->dev, GFP_KERNEL,  in u2fzero_init_hwrng()
259 	if (dev->rng_name == NULL)  in u2fzero_init_hwrng()
262 	dev->hwrng.name = dev->rng_name;  in u2fzero_init_hwrng()
263 	dev->hwrng.read = u2fzero_rng_read;  in u2fzero_init_hwrng()
265 	return devm_hwrng_register(&dev->hdev->dev, &dev->hwrng);  in u2fzero_init_hwrng()
268 static int u2fzero_fill_in_urb(struct u2fzero_device *dev)  in u2fzero_fill_in_urb()  argument
270 	struct hid_device *hdev = dev->hdev;  in u2fzero_fill_in_urb()
276 	if (dev->hdev->bus != BUS_USB)  in u2fzero_fill_in_urb()
288 	dev->urb = usb_alloc_urb(0, GFP_KERNEL);  in u2fzero_fill_in_urb()
289 	if (!dev->urb)  in u2fzero_fill_in_urb()
294 	usb_fill_int_urb(dev->urb,  in u2fzero_fill_in_urb()
297 		dev->buf_in,  in u2fzero_fill_in_urb()
309 	struct u2fzero_device *dev;  in u2fzero_probe()  local
316 	dev = devm_kzalloc(&hdev->dev, sizeof(*dev), GFP_KERNEL);  in u2fzero_probe()
317 	if (dev == NULL)  in u2fzero_probe()
320 	dev->hw_revision = id->driver_data;  in u2fzero_probe()
322 	dev->buf_out = devm_kmalloc(&hdev->dev,  in u2fzero_probe()
324 	if (dev->buf_out == NULL)  in u2fzero_probe()
327 	dev->buf_in = devm_kmalloc(&hdev->dev,  in u2fzero_probe()
329 	if (dev->buf_in == NULL)  in u2fzero_probe()
336 	dev->hdev = hdev;  in u2fzero_probe()
337 	hid_set_drvdata(hdev, dev);  in u2fzero_probe()
338 	mutex_init(&dev->lock);  in u2fzero_probe()
344 	u2fzero_fill_in_urb(dev);  in u2fzero_probe()
346 	dev->present = true;  in u2fzero_probe()
350 	ret = u2fzero_init_led(dev, minor);  in u2fzero_probe()
356 	hid_info(hdev, "%s LED initialised\n", hw_configs[dev->hw_revision].name);  in u2fzero_probe()
358 	ret = u2fzero_init_hwrng(dev, minor);  in u2fzero_probe()
364 	hid_info(hdev, "%s RNG initialised\n", hw_configs[dev->hw_revision].name);  in u2fzero_probe()
371 	struct u2fzero_device *dev = hid_get_drvdata(hdev);  in u2fzero_remove()  local
373 	mutex_lock(&dev->lock);  in u2fzero_remove()
374 	dev->present = false;  in u2fzero_remove()
375 	mutex_unlock(&dev->lock);  in u2fzero_remove()
378 	usb_poison_urb(dev->urb);  in u2fzero_remove()
379 	usb_free_urb(dev->urb);  in u2fzero_remove()