_nv means new value, not old value!
Signed-off-by: Thomas Klausner wiz@NetBSD.org --- xf86atomic.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xf86atomic.h b/xf86atomic.h index d0f85fc..4e7691f 100644 --- a/xf86atomic.h +++ b/xf86atomic.h @@ -85,7 +85,7 @@ typedef struct { uint_t atomic; } atomic_t; # define atomic_read(x) (int) ((x)->atomic) # define atomic_set(x, val) ((x)->atomic = (uint_t)(val)) # define atomic_inc(x) (atomic_inc_uint (&(x)->atomic)) -# define atomic_dec_and_test(x) (atomic_dec_uint_nv(&(x)->atomic) == 1) +# define atomic_dec_and_test(x) (atomic_dec_uint_nv(&(x)->atomic) == 0) # define atomic_add(x, v) (atomic_add_int(&(x)->atomic, (v))) # define atomic_dec(x, v) (atomic_add_int(&(x)->atomic, -(v))) # define atomic_cmpxchg(x, oldv, newv) atomic_cas_uint (&(x)->atomic, oldv, newv)