diff options
Diffstat (limited to 'arch/ia64/include/asm/rwsem.h')
| -rw-r--r-- | arch/ia64/include/asm/rwsem.h | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/arch/ia64/include/asm/rwsem.h b/arch/ia64/include/asm/rwsem.h index 8fa98dd303b4..917910607e0e 100644 --- a/arch/ia64/include/asm/rwsem.h +++ b/arch/ia64/include/asm/rwsem.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * R/W semaphores for ia64 * @@ -37,15 +38,31 @@ /* * lock for reading */ -static inline void -__down_read (struct rw_semaphore *sem) +static inline int +___down_read (struct rw_semaphore *sem) { long result = ia64_fetchadd8_acq((unsigned long *)&sem->count.counter, 1); - if (result < 0) + return (result < 0); +} + +static inline void +__down_read (struct rw_semaphore *sem) +{ + if (___down_read(sem)) rwsem_down_read_failed(sem); } +static inline int +__down_read_killable (struct rw_semaphore *sem) +{ + if (___down_read(sem)) + if (IS_ERR(rwsem_down_read_failed_killable(sem))) + return -EINTR; + + return 0; +} + /* * lock for writing */ @@ -72,9 +89,10 @@ __down_write (struct rw_semaphore *sem) static inline int __down_write_killable (struct rw_semaphore *sem) { - if (___down_write(sem)) + if (___down_write(sem)) { if (IS_ERR(rwsem_down_write_failed_killable(sem))) return -EINTR; + } return 0; } |