Commit-ID: 06321dd2d1ae5b5bdc847958ab9e71d22a29a33e Gitweb: http://git.kernel.org/tip/06321dd2d1ae5b5bdc847958ab9e71d22a29a33e Author: Waiman Long <long...@redhat.com> AuthorDate: Thu, 19 Jan 2017 09:31:52 -0500 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Fri, 20 Jan 2017 09:46:44 +0100
locking/rwsem: Remove unnecessary atomic_long_t casts Since sem->count had been changed to a atomic_long_t type, it is no longer necessary to use the atomic_long_t cast anymore. So remove them. Signed-off-by: Waiman Long <long...@redhat.com> Cc: Andrew Morton <a...@linux-foundation.org> Cc: Arnd Bergmann <a...@arndb.de> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Paul E. McKenney <paul...@linux.vnet.ibm.com> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: linux-a...@vger.kernel.org Link: http://lkml.kernel.org/r/1484836312-6656-1-git-send-email-long...@redhat.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- include/asm-generic/rwsem.h | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/include/asm-generic/rwsem.h b/include/asm-generic/rwsem.h index 5be122e..6c6a214 100644 --- a/include/asm-generic/rwsem.h +++ b/include/asm-generic/rwsem.h @@ -33,7 +33,7 @@ */ static inline void __down_read(struct rw_semaphore *sem) { - if (unlikely(atomic_long_inc_return_acquire((atomic_long_t *)&sem->count) <= 0)) + if (unlikely(atomic_long_inc_return_acquire(&sem->count) <= 0)) rwsem_down_read_failed(sem); } @@ -58,7 +58,7 @@ static inline void __down_write(struct rw_semaphore *sem) long tmp; tmp = atomic_long_add_return_acquire(RWSEM_ACTIVE_WRITE_BIAS, - (atomic_long_t *)&sem->count); + &sem->count); if (unlikely(tmp != RWSEM_ACTIVE_WRITE_BIAS)) rwsem_down_write_failed(sem); } @@ -68,7 +68,7 @@ static inline int __down_write_killable(struct rw_semaphore *sem) long tmp; tmp = atomic_long_add_return_acquire(RWSEM_ACTIVE_WRITE_BIAS, - (atomic_long_t *)&sem->count); + &sem->count); if (unlikely(tmp != RWSEM_ACTIVE_WRITE_BIAS)) if (IS_ERR(rwsem_down_write_failed_killable(sem))) return -EINTR; @@ -91,7 +91,7 @@ static inline void __up_read(struct rw_semaphore *sem) { long tmp; - tmp = atomic_long_dec_return_release((atomic_long_t *)&sem->count); + tmp = atomic_long_dec_return_release(&sem->count); if (unlikely(tmp < -1 && (tmp & RWSEM_ACTIVE_MASK) == 0)) rwsem_wake(sem); } @@ -102,7 +102,7 @@ static inline void __up_read(struct rw_semaphore *sem) static inline void __up_write(struct rw_semaphore *sem) { if (unlikely(atomic_long_sub_return_release(RWSEM_ACTIVE_WRITE_BIAS, - (atomic_long_t *)&sem->count) < 0)) + &sem->count) < 0)) rwsem_wake(sem); } @@ -120,8 +120,7 @@ static inline void __downgrade_write(struct rw_semaphore *sem) * read-locked region is ok to be re-ordered into the * write side. As such, rely on RELEASE semantics. */ - tmp = atomic_long_add_return_release(-RWSEM_WAITING_BIAS, - (atomic_long_t *)&sem->count); + tmp = atomic_long_add_return_release(-RWSEM_WAITING_BIAS, &sem->count); if (tmp < 0) rwsem_downgrade_wake(sem); }
