enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/drivers/input/serio/serport.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Input device TTY line discipline
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  *
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@@ -7,11 +8,6 @@
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  * 'serial io port' abstraction that the input device drivers use.
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  */
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-/*
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License version 2 as published by
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- * the Free Software Foundation.
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- */
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 #include <linux/uaccess.h>
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 #include <linux/kernel.h>
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@@ -160,7 +156,9 @@
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  * returning 0 characters.
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  */
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-static ssize_t serport_ldisc_read(struct tty_struct * tty, struct file * file, unsigned char __user * buf, size_t nr)
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+static ssize_t serport_ldisc_read(struct tty_struct * tty, struct file * file,
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+				  unsigned char *kbuf, size_t nr,
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+				  void **cookie, unsigned long offset)
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 {
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 	struct serport *serport = (struct serport*) tty->disc_data;
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 	struct serio *serio;
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@@ -226,7 +224,7 @@
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 #ifdef CONFIG_COMPAT
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 #define COMPAT_SPIOCSTYPE	_IOW('q', 0x01, compat_ulong_t)
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-static long serport_ldisc_compat_ioctl(struct tty_struct *tty,
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+static int serport_ldisc_compat_ioctl(struct tty_struct *tty,
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 				       struct file *file,
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 				       unsigned int cmd, unsigned long arg)
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 {