Other cores don't busy wait any more and we removed the last user of checking
the seqno for changes. Drop updating the number for shared fences altogether.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
---
drivers/dma-buf/reservation.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/drivers/dma-buf/reservation.c b/drivers/dma-buf/reservation.c
index d59207ca72d2..6eaca469005f 100644
--- a/drivers/dma-buf/reservation.c
+++ b/drivers/dma-buf/reservation.c
@@ -206,9 +206,6 @@ void reservation_object_add_shared_fence(struct reservation_object *obj,
fobj = reservation_object_get_list(obj);
count = fobj->shared_count;
- preempt_disable();
- write_seqcount_begin(&obj->seq);
-
for (i = 0; i < count; ++i) {
old = rcu_dereference_protected(fobj->shared[i],
@@ -226,9 +223,6 @@ void reservation_object_add_shared_fence(struct reservation_object *obj,
RCU_INIT_POINTER(fobj->shared[i], fence);
/* pointer update must be visible before we extend the shared_count */
smp_store_mb(fobj->shared_count, count);
-
- write_seqcount_end(&obj->seq);
- preempt_enable();
dma_fence_put(old);
}
EXPORT_SYMBOL(reservation_object_add_shared_fence);
--
2.17.1
