drm/ttm: simplify ttm_bo_wait

As far as I can see no need for a custom implementation any more.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 33 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index caa657d31ce3..28cd5352f8d0 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1546,46 +1546,17 @@ EXPORT_SYMBOL(ttm_bo_unmap_virtual);
 int ttm_bo_wait(struct ttm_buffer_object *bo,
                 bool interruptible, bool no_wait)
 {
-        struct reservation_object_list *fobj;
-        struct reservation_object *resv;
-        struct fence *excl;
-        long timeout = 15 * HZ;
-        int i;
-
-        resv = bo->resv;
-        fobj = reservation_object_get_list(resv);
-        excl = reservation_object_get_excl(resv);
-        if (excl) {
-                if (!fence_is_signaled(excl)) {
-                        if (no_wait)
-                                return -EBUSY;
-
-                        timeout = fence_wait_timeout(excl,
-                                                     interruptible, timeout);
-                }
-        }
-
-        for (i = 0; fobj && timeout > 0 && i < fobj->shared_count; ++i) {
-                struct fence *fence;
-                fence = rcu_dereference_protected(fobj->shared[i],
-                                                reservation_object_held(resv));
-
-                if (!fence_is_signaled(fence)) {
-                        if (no_wait)
-                                return -EBUSY;
-
-                        timeout = fence_wait_timeout(fence,
-                                                     interruptible, timeout);
-                }
-        }
+        long timeout = no_wait ? 0 : 15 * HZ;
 
+        timeout = reservation_object_wait_timeout_rcu(bo->resv, true,
+                                                      interruptible, timeout);
         if (timeout < 0)
                 return timeout;
 
         if (timeout == 0)
                 return -EBUSY;
 
-        reservation_object_add_excl_fence(resv, NULL);
+        reservation_object_add_excl_fence(bo->resv, NULL);
         return 0;
 }
 EXPORT_SYMBOL(ttm_bo_wait);