1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * u_printer.h 4 * 5 * Utility definitions for the printer function 6 * 7 * Copyright (c) 2015 Samsung Electronics Co., Ltd. 8 * http://www.samsung.com 9 * 10 * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License version 2 as 14 * published by the Free Software Foundation. 15 */ 16 17 #ifndef U_PRINTER_H 18 #define U_PRINTER_H 19 20 #include <linux/usb/composite.h> 21 22 struct f_printer_opts { 23 struct usb_function_instance func_inst; 24 int minor; 25 char *pnp_string; 26 bool pnp_string_allocated; 27 unsigned q_len; 28 29 /* 30 * Protect the data from concurrent access by read/write 31 * and create symlink/remove symlink 32 */ 33 struct mutex lock; 34 int refcnt; 35 }; 36 37 #endif /* U_PRINTER_H */ 38