diff options
Diffstat (limited to 'sys/arch/arm/s3c2xx0/s3c2xx0_mutex.c')
| -rw-r--r-- | sys/arch/arm/s3c2xx0/s3c2xx0_mutex.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/sys/arch/arm/s3c2xx0/s3c2xx0_mutex.c b/sys/arch/arm/s3c2xx0/s3c2xx0_mutex.c index 04c3332a1e5..e186a756ca7 100644 --- a/sys/arch/arm/s3c2xx0/s3c2xx0_mutex.c +++ b/sys/arch/arm/s3c2xx0/s3c2xx0_mutex.c @@ -1,4 +1,4 @@ -/* $OpenBSD: s3c2xx0_mutex.c,v 1.1 2008/11/26 14:39:14 drahn Exp $ */ +/* $OpenBSD: s3c2xx0_mutex.c,v 1.2 2009/08/13 13:24:55 weingart Exp $ */ /* * Copyright (c) 2004 Artur Grabowski <art@openbsd.org> @@ -58,6 +58,18 @@ mtx_enter(struct mutex *mtx) } void +mtx_enter_try(struct mutex *mtx) +{ + if (mtx->mtx_wantipl != IPL_NONE) + mtx->mtx_oldipl = _splraise(mtx->mtx_wantipl); + + MUTEX_ASSERT_UNLOCKED(mtx); + mtx->mtx_lock = 1; + + return 1; +} + +void mtx_leave(struct mutex *mtx) { MUTEX_ASSERT_LOCKED(mtx); |