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 <andrzejtp2010@gmail.com> 11 */ 12 13 #ifndef U_PRINTER_H 14 #define U_PRINTER_H 15 16 #include <linux/usb/composite.h> 17 18 struct f_printer_opts { 19 struct usb_function_instance func_inst; 20 int minor; 21 char *pnp_string; 22 bool pnp_string_allocated; 23 unsigned q_len; 24 25 /* 26 * Protect the data from concurrent access by read/write 27 * and create symlink/remove symlink 28 */ 29 struct mutex lock; 30 int refcnt; 31 }; 32 33 #endif /* U_PRINTER_H */ 34