From: xinhui pan Date: Fri, 21 May 2021 08:31:12 +0000 (+0800) Subject: drm/ttm: Skip swapout if ttm object is not populated X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=35f819d218035ddfbc71e7cf62a4849231701e58;p=linux.git drm/ttm: Skip swapout if ttm object is not populated Swapping a ttm object which has no backend pages makes no sense. Suggested-by: Christian König Signed-off-by: xinhui pan Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20210521083112.33176-1-xinhui.pan@amd.com CC: stable@kernel.org Signed-off-by: Christian König --- diff --git a/drivers/gpu/drm/ttm/ttm_device.c b/drivers/gpu/drm/ttm/ttm_device.c index 510e3e001dabe..a1dcf7d55c903 100644 --- a/drivers/gpu/drm/ttm/ttm_device.c +++ b/drivers/gpu/drm/ttm/ttm_device.c @@ -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;