Commit 35f819d2 authored by xinhui pan's avatar xinhui pan Committed by Christian König
Browse files

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



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

Suggested-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarxinhui pan <xinhui.pan@amd.com>
Reviewed-by: default avatarChristian 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: default avatarChristian König <christian.koenig@amd.com>
parent 7cfc4ea7

drivers/gpu/drm/ttm/ttm_device.c

+1 −1
Original line number Diff line number Diff line
@@ -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;