1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __SND_SEQ_LOCK_H 3 #define __SND_SEQ_LOCK_H 4 5 #include <linux/sched.h> 6 7 typedef atomic_t snd_use_lock_t; 8 9 /* initialize lock */ 10 #define snd_use_lock_init(lockp) atomic_set(lockp, 0) 11 12 /* increment lock */ 13 #define snd_use_lock_use(lockp) atomic_inc(lockp) 14 15 /* release lock */ 16 #define snd_use_lock_free(lockp) atomic_dec(lockp) 17 18 /* wait until all locks are released */ 19 void snd_use_lock_sync_helper(snd_use_lock_t *lock, const char *file, int line); 20 #define snd_use_lock_sync(lockp) snd_use_lock_sync_helper(lockp, __BASE_FILE__, __LINE__) 21 22 #endif /* __SND_SEQ_LOCK_H */ 23