1 files changed, 28 insertions, 27 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 5d8750830dc..d93c73b1c47 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -427,11 +427,9 @@ moved:
         }
 
         if (bo->mem.mm_node) {
-                spin_lock(&bo->lock);
                 bo->offset = (bo->mem.start << PAGE_SHIFT) +
                     bdev->man[bo->mem.mem_type].gpu_offset;
                 bo->cur_placement = bo->mem.placement;
-                spin_unlock(&bo->lock);
         } else
                 bo->offset = 0;
 
@@ -485,14 +483,14 @@ static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo)
         int put_count;
         int ret;
 
-        spin_lock(&bo->lock);
+        spin_lock(&bdev->fence_lock);
         (void) ttm_bo_wait(bo, false, false, true);
         if (!bo->sync_obj) {
 
                 spin_lock(&glob->lru_lock);
 
                 /**
-                 * Lock inversion between bo::reserve and bo::lock here,
+                 * Lock inversion between bo:reserve and bdev::fence_lock here,
                  * but that's OK, since we're only trylocking.
                  */
 
@@ -501,7 +499,7 @@ static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo)
                 if (unlikely(ret == -EBUSY))
                         goto queue;
 
-                spin_unlock(&bo->lock);
+                spin_unlock(&bdev->fence_lock);
                 put_count = ttm_bo_del_from_lru(bo);
 
                 spin_unlock(&glob->lru_lock);
@@ -522,7 +520,7 @@ queue:
         kref_get(&bo->list_kref);
         list_add_tail(&bo->ddestroy, &bdev->ddestroy);
         spin_unlock(&glob->lru_lock);
-        spin_unlock(&bo->lock);
+        spin_unlock(&bdev->fence_lock);
 
         if (sync_obj) {
                 driver->sync_obj_flush(sync_obj, sync_obj_arg);
@@ -547,14 +545,15 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo,
                                bool no_wait_reserve,
                                bool no_wait_gpu)
 {
+        struct ttm_bo_device *bdev = bo->bdev;
         struct ttm_bo_global *glob = bo->glob;
         int put_count;
         int ret = 0;
 
 retry:
-        spin_lock(&bo->lock);
+        spin_lock(&bdev->fence_lock);
         ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu);
-        spin_unlock(&bo->lock);
+        spin_unlock(&bdev->fence_lock);
 
         if (unlikely(ret != 0))
                 return ret;
@@ -707,9 +706,9 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible,
         struct ttm_placement placement;
         int ret = 0;
 
-        spin_lock(&bo->lock);
+        spin_lock(&bdev->fence_lock);
         ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu);
-        spin_unlock(&bo->lock);
+        spin_unlock(&bdev->fence_lock);
 
         if (unlikely(ret != 0)) {
                 if (ret != -ERESTARTSYS) {
@@ -1044,6 +1043,7 @@ int ttm_bo_move_buffer(struct ttm_buffer_object *bo,
 {
         int ret = 0;
         struct ttm_mem_reg mem;
+        struct ttm_bo_device *bdev = bo->bdev;
 
         BUG_ON(!atomic_read(&bo->reserved));
 
@@ -1052,9 +1052,9 @@ int ttm_bo_move_buffer(struct ttm_buffer_object *bo,
          * Have the driver move function wait for idle when necessary,
          * instead of doing it here.
          */
-        spin_lock(&bo->lock);
+        spin_lock(&bdev->fence_lock);
         ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu);
-        spin_unlock(&bo->lock);
+        spin_unlock(&bdev->fence_lock);
         if (ret)
                 return ret;
         mem.num_pages = bo->num_pages;
@@ -1171,7 +1171,6 @@ int ttm_bo_init(struct ttm_bo_device *bdev,
         }
         bo->destroy = destroy;
 
-        spin_lock_init(&bo->lock);
         kref_init(&bo->kref);
         kref_init(&bo->list_kref);
         atomic_set(&bo->cpu_writers, 0);
@@ -1535,7 +1534,7 @@ int ttm_bo_device_init(struct ttm_bo_device *bdev,
         bdev->dev_mapping = NULL;
         bdev->glob = glob;
         bdev->need_dma32 = need_dma32;
-
+        spin_lock_init(&bdev->fence_lock);
         mutex_lock(&glob->device_list_mutex);
         list_add_tail(&bdev->device_list, &glob->device_list);
         mutex_unlock(&glob->device_list_mutex);
@@ -1659,6 +1658,7 @@ int ttm_bo_wait(struct ttm_buffer_object *bo,
                 bool lazy, bool interruptible, bool no_wait)
 {
         struct ttm_bo_driver *driver = bo->bdev->driver;
+        struct ttm_bo_device *bdev = bo->bdev;
         void *sync_obj;
         void *sync_obj_arg;
         int ret = 0;
@@ -1672,9 +1672,9 @@ int ttm_bo_wait(struct ttm_buffer_object *bo,
                         void *tmp_obj = bo->sync_obj;
                         bo->sync_obj = NULL;
                         clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags);
-                        spin_unlock(&bo->lock);
+                        spin_unlock(&bdev->fence_lock);
                         driver->sync_obj_unref(&tmp_obj);
-                        spin_lock(&bo->lock);
+                        spin_lock(&bdev->fence_lock);
                         continue;
                 }
 
@@ -1683,29 +1683,29 @@ int ttm_bo_wait(struct ttm_buffer_object *bo,
 
                 sync_obj = driver->sync_obj_ref(bo->sync_obj);
                 sync_obj_arg = bo->sync_obj_arg;
-                spin_unlock(&bo->lock);
+                spin_unlock(&bdev->fence_lock);
                 ret = driver->sync_obj_wait(sync_obj, sync_obj_arg,
                                             lazy, interruptible);
                 if (unlikely(ret != 0)) {
                         driver->sync_obj_unref(&sync_obj);
-                        spin_lock(&bo->lock);
+                        spin_lock(&bdev->fence_lock);
                         return ret;
                 }
-                spin_lock(&bo->lock);
+                spin_lock(&bdev->fence_lock);
                 if (likely(bo->sync_obj == sync_obj &&
                            bo->sync_obj_arg == sync_obj_arg)) {
                         void *tmp_obj = bo->sync_obj;
                         bo->sync_obj = NULL;
                         clear_bit(TTM_BO_PRIV_FLAG_MOVING,
                                   &bo->priv_flags);
-                        spin_unlock(&bo->lock);
+                        spin_unlock(&bdev->fence_lock);
                         driver->sync_obj_unref(&sync_obj);
                         driver->sync_obj_unref(&tmp_obj);
-                        spin_lock(&bo->lock);
+                        spin_lock(&bdev->fence_lock);
                 } else {
-                        spin_unlock(&bo->lock);
+                        spin_unlock(&bdev->fence_lock);
                         driver->sync_obj_unref(&sync_obj);
-                        spin_lock(&bo->lock);
+                        spin_lock(&bdev->fence_lock);
                 }
         }
         return 0;
@@ -1714,6 +1714,7 @@ EXPORT_SYMBOL(ttm_bo_wait);
 
 int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait)
 {
+        struct ttm_bo_device *bdev = bo->bdev;
         int ret = 0;
 
         /*
@@ -1723,9 +1724,9 @@ int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait)
         ret = ttm_bo_reserve(bo, true, no_wait, false, 0);
         if (unlikely(ret != 0))
                 return ret;
-        spin_lock(&bo->lock);
+        spin_lock(&bdev->fence_lock);
         ret = ttm_bo_wait(bo, false, true, no_wait);
-        spin_unlock(&bo->lock);
+        spin_unlock(&bdev->fence_lock);
         if (likely(ret == 0))
                 atomic_inc(&bo->cpu_writers);
         ttm_bo_unreserve(bo);
@@ -1797,9 +1798,9 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink)
          * Wait for GPU, then move to system cached.
          */
 
-        spin_lock(&bo->lock);
+        spin_lock(&bo->bdev->fence_lock);
         ret = ttm_bo_wait(bo, false, false, false);
-        spin_unlock(&bo->lock);
+        spin_unlock(&bo->bdev->fence_lock);
 
         if (unlikely(ret != 0))
                 goto out;