Commit 1b76af5c authored Feb 05, 2014 by Thomas Hellstrom

drm/ttm: Don't clear page metadata of imported sg pages



These page pointers shouldn't be visible to TTM in the first place, but
until we fix that up, don't clear the page metadata because that
will upset the exporter.

Reported-and-tested-by: Cristoph Haag <haagch.christoph@googleemail.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>

parent c66f8543

drivers/gpu/drm/ttm/ttm_tt.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -380,6 +380,9 @@ static void ttm_tt_clear_mapping(struct ttm_tt *ttm)
		pgoff_t i;
		struct page **page = ttm->pages;

		if (ttm->page_flags & TTM_PAGE_FLAG_SG)
		return;

		for (i = 0; i < ttm->num_pages; ++i) {
		(*page)->mapping = NULL;
		(*page++)->index = 0;