From: <twischer@de.adit-jv.com>
To: patch@alsa-project.org
Cc: Timo Wischer <twischer@de.adit-jv.com>, alsa-devel@alsa-project.org
Subject: [PATCH - THREAD_SAFE_API 1/1] pcm: Do not access lock_enabled if thread safe API
Date: Thu, 1 Mar 2018 17:34:44 +0100 [thread overview]
Message-ID: <1519922084-6954-1-git-send-email-twischer@de.adit-jv.com> (raw)
From: Timo Wischer <twischer@de.adit-jv.com>
is not enabled.
Without this commit compiling fails when THREAD_SAFE_API is not enabled
Signed-off-by: Timo Wischer <twischer@de.adit-jv.com>
diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c
index 1be3833..d53ed98 100644
--- a/src/pcm/pcm.c
+++ b/src/pcm/pcm.c
@@ -823,8 +823,11 @@ int snd_pcm_async(snd_pcm_t *pcm, int sig, pid_t pid)
sig = SIGIO;
if (pid == 0)
pid = getpid();
+
+#ifdef THREAD_SAFE_API
/* async handler may lead to a deadlock; suppose no multi thread */
pcm->lock_enabled = 0;
+#endif
return pcm->ops->async(pcm->op_arg, sig, pid);
}
#endif
--
2.7.4
next reply other threads:[~2018-03-01 16:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-01 16:34 twischer [this message]
2018-03-01 17:02 ` [PATCH - THREAD_SAFE_API 1/1] pcm: Do not access lock_enabled if thread safe API Takashi Iwai
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