From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Wed, 6 Sep 2017 16:55:55 +0200
Subject: drm/ttm: allow mapping BOs while they are still on the swap list
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Git-commit: f5683f8b3794f9496877fb9e20305433c6575b81
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

With shared reservation objects it is possible that we want to temporary
kmap an BO while it is still on the swap list.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/ttm/ttm_bo_util.c |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -587,7 +587,6 @@ int ttm_bo_kmap(struct ttm_buffer_object
 	unsigned long offset, size;
 	int ret;
 
-	BUG_ON(!list_empty(&bo->swap));
 	map->virtual = NULL;
 	map->bo = bo;
 	if (num_pages > bo->num_pages)