~hc/RK356X_SDK_RELEASE.git

..	..	@@ -1,12 +1,8 @@
	1	+// SPDX-License-Identifier: GPL-2.0-or-later
1	2	/*
2	3	* PPP async serial channel driver for Linux.
3	4	*
4	5	* Copyright 1999 Paul Mackerras.
5		- *
6		- * This program is free software; you can redistribute it and/or
7		- * modify it under the terms of the GNU General Public License
8		- * as published by the Free Software Foundation; either version
9		- * 2 of the License, or (at your option) any later version.
10	6	*
11	7	* This driver provides the encapsulation and framing for sending
12	8	* and receiving PPP frames over async serial lines. It relies on
..	..	@@ -70,7 +66,7 @@
70	66	struct tasklet_struct tsk;
71	67
72	68	refcount_t refcnt;
73		- struct semaphore dead_sem;
	69	+ struct completion dead;
74	70	struct ppp_channel chan; /* interface to generic ppp layer */
75	71	unsigned char obuf[OBUFSIZE];
76	72	};
..	..	@@ -148,7 +144,7 @@
148	144	static void ap_put(struct asyncppp *ap)
149	145	{
150	146	if (refcount_dec_and_test(&ap->refcnt))
151		- up(&ap->dead_sem);
	147	+ complete(&ap->dead);
152	148	}
153	149
154	150	/*
..	..	@@ -186,7 +182,7 @@
186	182	tasklet_init(&ap->tsk, ppp_async_process, (unsigned long) ap);
187	183
188	184	refcount_set(&ap->refcnt, 1);
189		- sema_init(&ap->dead_sem, 0);
	185	+ init_completion(&ap->dead);
190	186
191	187	ap->chan.private = ap;
192	188	ap->chan.ops = &async_ops;
..	..	@@ -235,7 +231,7 @@
235	231	* by the time it returns.
236	232	*/
237	233	if (!refcount_dec_and_test(&ap->refcnt))
238		- down(&ap->dead_sem);
	234	+ wait_for_completion(&ap->dead);
239	235	tasklet_kill(&ap->tsk);
240	236
241	237	ppp_unregister_channel(&ap->chan);
..	..	@@ -263,7 +259,8 @@
263	259	*/
264	260	static ssize_t
265	261	ppp_asynctty_read(struct tty_struct tty, struct file file,
266		- unsigned char __user *buf, size_t count)
	262	+ unsigned char *buf, size_t count,
	263	+ void **cookie, unsigned long offset)
267	264	{
268	265	return -EAGAIN;
269	266	}