drm/vram-helper: use wrapper to access memory managers

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-39-airlied@gmail.com

drivers/gpu/drm/drm_gem_vram_helper.c

@@ -1075,7 +1075,7 @@ static int drm_vram_mm_debugfs(struct seq_file *m, void *data)
 {
 	struct drm_info_node *node = (struct drm_info_node *) m->private;
 	struct drm_vram_mm *vmm = node->minor->dev->vram_mm;
-	struct ttm_mem_type_manager *man = &vmm->bdev.man[TTM_PL_VRAM];
+	struct ttm_mem_type_manager *man = ttm_manager_type(&vmm->bdev, TTM_PL_VRAM);
 	struct drm_printer p = drm_seq_file_printer(m);
 
 	ttm_mem_type_manager_debug(man, &p);
@@ -1103,7 +1103,7 @@ EXPORT_SYMBOL(drm_vram_mm_debugfs_init);
 static int drm_vram_mm_init(struct drm_vram_mm *vmm, struct drm_device *dev,
 			    uint64_t vram_base, size_t vram_size)
 {
-	struct ttm_mem_type_manager *man = &vmm->bdev.man[TTM_PL_VRAM];
+	struct ttm_mem_type_manager *man = ttm_manager_type(&vmm->bdev, TTM_PL_VRAM);
 	int ret;
 
 	vmm->vram_base = vram_base;
@@ -1127,7 +1127,7 @@ static int drm_vram_mm_init(struct drm_vram_mm *vmm, struct drm_device *dev,
 
 static void drm_vram_mm_cleanup(struct drm_vram_mm *vmm)
 {
-	ttm_range_man_fini(&vmm->bdev, &vmm->bdev.man[TTM_PL_VRAM]);
+	ttm_range_man_fini(&vmm->bdev, ttm_manager_type(&vmm->bdev, TTM_PL_VRAM));
 	ttm_bo_device_release(&vmm->bdev);
 }