25 static int wm831x_unique_id_read(struct wm831x *wm831x, char *id)  in wm831x_unique_id_read()  argument
30 		val = wm831x_reg_read(wm831x, WM831X_UNIQUE_ID_1 + i);  in wm831x_unique_id_read()
44 	struct wm831x *wm831x = dev_get_drvdata(dev);  in unique_id_show()  local
48 	rval = wm831x_unique_id_read(wm831x, id);  in unique_id_show()
57 int wm831x_otp_init(struct wm831x *wm831x)  in wm831x_otp_init()  argument
62 	ret = device_create_file(wm831x->dev, &dev_attr_unique_id);  in wm831x_otp_init()
64 		dev_err(wm831x->dev, "Unique ID attribute not created: %d\n",  in wm831x_otp_init()
67 	ret = wm831x_unique_id_read(wm831x, uuid);  in wm831x_otp_init()
71 		dev_err(wm831x->dev, "Failed to read UUID: %d\n", ret);  in wm831x_otp_init()
76 void wm831x_otp_exit(struct wm831x *wm831x)  in wm831x_otp_exit()  argument
78 	device_remove_file(wm831x->dev, &dev_attr_unique_id);  in wm831x_otp_exit()