[PATCH] xtensa: struct semaphore.sleepers initialization

No one may sleep on us until we've been down()'d. So on allocation,
initialize `sleepers' to 0, just like everyone else does.

Signed-off-by: Arthur Othieno <[e-mail]>
Acked-by: Christian Zankel <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

include/asm-xtensa/semaphore.h

···
 static inline void sema_init (struct semaphore *sem, int val)
 {
 	atomic_set(&sem->count, val);
+	sem->sleepers = 0;
 	init_waitqueue_head(&sem->wait);
 }