1 #include <linux/kthread.h>
2 #include <linux/wait.h>
8 DECLARE_WAIT_QUEUE_HEAD(speakup_event);
9 EXPORT_SYMBOL_GPL(speakup_event);
11 int speakup_thread(void *data)
15 struct bleep our_sound;
19 our_sound.jiffies = 0;
21 mutex_lock(&spk_mutex);
26 our_sound = unprocessed_sound;
27 unprocessed_sound.active = 0;
28 prepare_to_wait(&speakup_event, &wait,
30 should_break = kthread_should_stop() ||
32 (synth && synth->catch_up && synth->alive &&
33 (speakup_info.flushing ||
34 !synth_buffer_empty()));
38 mutex_unlock(&spk_mutex);
40 mutex_lock(&spk_mutex);
42 finish_wait(&speakup_event, &wait);
43 if (kthread_should_stop())
47 kd_mksound(our_sound.freq, our_sound.jiffies);
48 if (synth && synth->catch_up && synth->alive) {
49 /* It is up to the callee to take the lock, so that it
50 * can sleep whenever it likes */
51 synth->catch_up(synth);
56 mutex_unlock(&spk_mutex);