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--- alsa-utils-1.0.27.2.org/alsaloop/pcmjob.c
+++ alsa-utils-1.0.27.2/alsaloop/pcmjob.c
@@ -62,11 +62,22 @@
};
#endif
-static pthread_mutex_t pcm_open_mutex =
- PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
+static pthread_once_t pcm_open_mutex_once = PTHREAD_ONCE_INIT;
+static pthread_mutex_t pcm_open_mutex;
+static void pcm_open_init_mutex(void)
+{
+ pthread_mutexattr_t attr;
+
+ pthread_mutexattr_init(&attr);
+ pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+ pthread_mutex_init(&pcm_open_mutex, &attr);
+ pthread_mutexattr_destroy(&attr);
+}
+
static inline void pcm_open_lock(void)
{
+ pthread_once(&pcm_open_mutex_once, pcm_open_init_mutex);
if (workarounds & WORKAROUND_SERIALOPEN)
pthread_mutex_lock(&pcm_open_mutex);
}
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