xref: /dflybsd-src/sys/dev/drm/linux_completion.c (revision 3f2dd94a569761201b5b0a18b2f697f97fe1b9dc)
1f1e2e235SFrançois Tigeot /*
2*3f2dd94aSFrançois Tigeot  * Copyright (c) 2019-2020 François Tigeot <ftigeot@wolfpond.org>
3f1e2e235SFrançois Tigeot  * All rights reserved.
4f1e2e235SFrançois Tigeot  *
5f1e2e235SFrançois Tigeot  * Redistribution and use in source and binary forms, with or without
6f1e2e235SFrançois Tigeot  * modification, are permitted provided that the following conditions
7f1e2e235SFrançois Tigeot  * are met:
8f1e2e235SFrançois Tigeot  * 1. Redistributions of source code must retain the above copyright
9f1e2e235SFrançois Tigeot  *    notice unmodified, this list of conditions, and the following
10f1e2e235SFrançois Tigeot  *    disclaimer.
11f1e2e235SFrançois Tigeot  * 2. Redistributions in binary form must reproduce the above copyright
12f1e2e235SFrançois Tigeot  *    notice, this list of conditions and the following disclaimer in the
13f1e2e235SFrançois Tigeot  *    documentation and/or other materials provided with the distribution.
14f1e2e235SFrançois Tigeot  *
15f1e2e235SFrançois Tigeot  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16f1e2e235SFrançois Tigeot  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17f1e2e235SFrançois Tigeot  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18f1e2e235SFrançois Tigeot  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19f1e2e235SFrançois Tigeot  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20f1e2e235SFrançois Tigeot  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21f1e2e235SFrançois Tigeot  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22f1e2e235SFrançois Tigeot  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23f1e2e235SFrançois Tigeot  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24f1e2e235SFrançois Tigeot  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25f1e2e235SFrançois Tigeot  */
26f1e2e235SFrançois Tigeot 
27f1e2e235SFrançois Tigeot #include <linux/sched.h>
28f1e2e235SFrançois Tigeot #include <linux/completion.h>
29f1e2e235SFrançois Tigeot 
30f1e2e235SFrançois Tigeot void
wait_for_completion(struct completion * c)31f1e2e235SFrançois Tigeot wait_for_completion(struct completion *c)
32f1e2e235SFrançois Tigeot {
33f1e2e235SFrançois Tigeot 	__wait_for_completion_generic(c, MAX_SCHEDULE_TIMEOUT, 0);
34f1e2e235SFrançois Tigeot }
35*3f2dd94aSFrançois Tigeot 
36*3f2dd94aSFrançois Tigeot /* This function can only return 0 or -ERESTARTSYS */
37*3f2dd94aSFrançois Tigeot int
wait_for_completion_interruptible(struct completion * c)38*3f2dd94aSFrançois Tigeot wait_for_completion_interruptible(struct completion *c)
39*3f2dd94aSFrançois Tigeot {
40*3f2dd94aSFrançois Tigeot 	long rv = __wait_for_completion_generic(c, MAX_SCHEDULE_TIMEOUT, PCATCH);
41*3f2dd94aSFrançois Tigeot 
42*3f2dd94aSFrançois Tigeot 	if (rv == -ERESTARTSYS)
43*3f2dd94aSFrançois Tigeot 		return -ERESTARTSYS;
44*3f2dd94aSFrançois Tigeot 
45*3f2dd94aSFrançois Tigeot 	return 0;
46*3f2dd94aSFrançois Tigeot }
47