drm/vmwgfx: Stricter count of legacy surface device resources

For legacy surfaces, they were previously registered as device resources
when the driver resources were created. Since they are evictable we instead
register them as device resources once they are created on the device,
just like for guest-backed surfaces. This has implications during
hibernation where we can't hibernate with device resources active.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Deepak Rawat <drawat@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>

drivers/gpu/drm/vmwgfx/vmwgfx_surface.c

@@ -345,7 +345,6 @@ static void vmw_hw_surface_destroy(struct vmw_resource *res)
 		dev_priv->used_memory_size -= res->backup_size;
 		mutex_unlock(&dev_priv->cmdbuf_mutex);
 	}
-	vmw_fifo_resource_dec(dev_priv);
 }
 
 /**
@@ -407,6 +406,8 @@ static int vmw_legacy_srf_create(struct vmw_resource *res)
 
 	vmw_surface_define_encode(srf, cmd);
 	vmw_fifo_commit(dev_priv, submit_size);
+	vmw_fifo_resource_inc(dev_priv);
+
 	/*
 	 * Surface memory usage accounting.
 	 */
@@ -558,6 +559,7 @@ static int vmw_legacy_srf_destroy(struct vmw_resource *res)
 	 */
 
 	vmw_resource_release_id(res);
+	vmw_fifo_resource_dec(dev_priv);
 
 	return 0;
 }
@@ -579,15 +581,11 @@ static int vmw_surface_init(struct vmw_private *dev_priv,
 	struct vmw_resource *res = &srf->res;
 
 	BUG_ON(!res_free);
-	if (!dev_priv->has_mob)
-		vmw_fifo_resource_inc(dev_priv);
 	ret = vmw_resource_init(dev_priv, res, true, res_free,
 				(dev_priv->has_mob) ? &vmw_gb_surface_func :
 				&vmw_legacy_surface_func);
 
 	if (unlikely(ret != 0)) {
-		if (!dev_priv->has_mob)
-			vmw_fifo_resource_dec(dev_priv);
 		res_free(res);
 		return ret;
 	}