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drm/ttm: Fix swapin regression

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Commit "drm/ttm: Don't move non-existing data" didn't take the
swapped-out corner case into account. This patch corrects that.
Fixes blank screen after attempted suspend / hibernate on vmwgfx.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Thomas Hellstrom 2013-12-21 22:23:02 +01:00 committed by Dave Airlie
parent 488574dbc4
commit 2e6d8b469b
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/ttm/ttm_bo_util.c
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@ -353,7 +353,8 @@ int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
* Don't move nonexistent data. Clear destination instead.
*/
if (old_iomap == NULL &&
(ttm == NULL || ttm->state == tt_unpopulated)) {
(ttm == NULL || (ttm->state == tt_unpopulated &&
!(ttm->page_flags & TTM_PAGE_FLAG_SWAPPED)))) {
memset_io(new_iomap, 0, new_mem->num_pages*PAGE_SIZE);
goto out2;
}