drm/ast: invalidate page tables when pinning a BO

commit 3ac65259328324de323dc006b52ff7c1a5b18d19 upstream.

same fix as cirrus and mgag200.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/ast/ast_ttm.c b/drivers/gpu/drm/ast/ast_ttm.c
index 09da3393c527188f85a5e5f42316c502788e1a93..d5902e21d4a3b4af541bda94ae7c8dfbb63dd935 100644 (file)
--- a/drivers/gpu/drm/ast/ast_ttm.c
+++ b/drivers/gpu/drm/ast/ast_ttm.c
@@ -348,6 +348,7 @@ int ast_bo_create(struct drm_device *dev, int size, int align,
 
        astbo->gem.driver_private = NULL;
        astbo->bo.bdev = &ast->ttm.bdev;
+       astbo->bo.bdev->dev_mapping = dev->dev_mapping;
 
        ast_ttm_placement(astbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);