drm/ttm: ttm_bo_swapout_all doesn't use it's argument.

Just drop the argument from this.

This does ask the question if this is the function vmwgfx
should be using or should it be doing an evict all like
the other drivers.
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200728034254.20114-1-airlied@gmail.com

drivers/gpu/drm/ttm/ttm_bo.c

@@ -1838,7 +1838,7 @@ int ttm_bo_swapout(struct ttm_bo_global *glob, struct ttm_operation_ctx *ctx)
 }
 EXPORT_SYMBOL(ttm_bo_swapout);
 
-void ttm_bo_swapout_all(struct ttm_bo_device *bdev)
+void ttm_bo_swapout_all(void)
 {
 	struct ttm_operation_ctx ctx = {
 		.interruptible = false,

drivers/gpu/drm/vmwgfx/vmwgfx_drv.c

@@ -1352,7 +1352,7 @@ static int vmw_pm_freeze(struct device *kdev)
 	vmw_execbuf_release_pinned_bo(dev_priv);
 	vmw_resource_evict_all(dev_priv);
 	vmw_release_device_early(dev_priv);
-	ttm_bo_swapout_all(&dev_priv->bdev);
+	ttm_bo_swapout_all();
 	if (dev_priv->enable_fb)
 		vmw_fifo_resource_dec(dev_priv);
 	if (atomic_read(&dev_priv->num_fifo_resources) != 0) {

include/drm/ttm/ttm_bo_api.h

@@ -692,7 +692,7 @@ ssize_t ttm_bo_io(struct ttm_bo_device *bdev, struct file *filp,
 
 int ttm_bo_swapout(struct ttm_bo_global *glob,
 			struct ttm_operation_ctx *ctx);
-void ttm_bo_swapout_all(struct ttm_bo_device *bdev);
+void ttm_bo_swapout_all(void);
 
 /**
  * ttm_bo_uses_embedded_gem_object - check if the given bo uses the