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 <longman@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arch@vger.kernel.org
Link: http://lkml.kernel.org/r/1484836312-6656-1-git-send-email-longman@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/include/asm-generic/rwsem.h b/include/asm-generic/rwsem.h
index 5be122e3d32605ad9e0f809b23ba5349d5118de4..6c6a2141f271cba9fd7fe56636718dc9ad04b550 100644 (file)
--- 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);
 }