1From 41c029755502acf01ed634db437ac06d09be6c41 Mon Sep 17 00:00:00 2001
2From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
3Date: Fri, 13 Apr 2018 09:02:37 +0200
4Subject: [PATCH] Don't use fork() on noMMU platforms
5MIME-Version: 1.0
6Content-Type: text/plain; charset=UTF-8
7Content-Transfer-Encoding: 8bit
8
9Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
10[Jörg: update patch for 1.1.6]
11Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
12Upstream: http://mailman.alsa-project.org/pipermail/alsa-devel/2018-November/141376.html
13[Bernd: update patch for 1.2.4 & 1.2.7]
14Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
15---
16 configure.ac         |  2 ++
17 src/pcm/pcm_direct.c | 10 +++++++++-
18 2 files changed, 11 insertions(+), 1 deletion(-)
19
20diff --git a/configure.ac b/configure.ac
21index cce195ae..0c852434 100644
22--- a/configure.ac
23+++ b/configure.ac
24@@ -52,6 +52,8 @@ dnl Checks for library functions.
25 AC_CHECK_FUNCS([uselocale])
26 AC_CHECK_FUNCS([eaccess])
27
28+AC_CHECK_FUNC([fork])
29+
30 SAVE_LIBRARY_VERSION
31 AC_SUBST(LIBTOOL_VERSION_INFO)
32
33diff --git a/src/pcm/pcm_direct.c b/src/pcm/pcm_direct.c
34index 2b07eff9..4dc3ea26 100644
35--- a/src/pcm/pcm_direct.c
36+++ b/src/pcm/pcm_direct.c
37@@ -437,13 +437,21 @@ int snd_pcm_direct_server_create(snd_pcm_direct_t *dmix)
38 		close(dmix->server_fd);
39 		return ret;
40 	}
41-
42+
43+#ifdef HAVE_FORK
44 	ret = fork();
45+#else
46+	ret = vfork();
47+#endif
48 	if (ret < 0) {
49 		close(dmix->server_fd);
50 		return ret;
51 	} else if (ret == 0) {
52+#ifdef HAVE_FORK
53 		ret = fork();
54+#else
55+		ret = vfork();
56+#endif
57 		if (ret == 0)
58 			server_job(dmix);
59 		_exit(EXIT_SUCCESS);
60--
612.14.3
62
63