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drm/ttm: Skip swapout if ttm object is not populated

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Swapping a ttm object which has no backend pages makes no sense.

Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210521083112.33176-1-xinhui.pan@amd.com
CC: stable@kernel.org
Signed-off-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
xinhui pan
2021-05-26 15:02:47 +02:00
committed by Christian König
parent 7cfc4ea78f
commit 35f819d218
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/ttm/ttm_device.c
+1 -1
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@@ -145,7 +145,7 @@ int ttm_device_swapout(struct ttm_device *bdev, struct ttm_operation_ctx *ctx,
list_for_each_entry(bo, &man->lru[j], lru) {
uint32_t num_pages;
if (!bo->ttm ||
if (!bo->ttm || !ttm_tt_is_populated(bo->ttm) ||
bo->ttm->page_flags & TTM_PAGE_FLAG_SG ||
bo->ttm->page_flags & TTM_PAGE_FLAG_SWAPPED)
continue;