From: Dave Airlie <airlied@redhat.com>
Date: Wed, 7 Aug 2013 00:01:56 +0000 (+1000)
Subject: drm/ast: invalidate page tables when pinning a BO
X-Git-Tag: firefly_0821_release~6453^2~1090
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=aabfe27dfe71d29b9ac08790f1a0ca240c1264b6;p=firefly-linux-kernel-4.4.55.git

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 09da3393c527..d5902e21d4a3 100644
--- 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);