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drm: fix page count calculation 

Also no need to do pre-populate work on single page
main
Dave Airlie 2007-10-04 16:13:22 +10:00
parent b0473699ed
commit 495bbbaadc
1 changed files with 9 additions and 10 deletions
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19
linux-core/drm_bo_move.c
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@ -488,16 +488,6 @@ static int drm_bo_kmap_ttm(struct drm_buffer_object *bo, unsigned long start_pag
BUG_ON(!ttm);
/*
* Populate the part we're mapping;
*/
for (i=start_page; i< num_pages; ++i) {
d = drm_ttm_get_page(ttm, i);
if (!d)
return -ENOMEM;
}
if (num_pages == 1 && (mem->flags & DRM_BO_FLAG_CACHED)) {
/*
@ -509,6 +499,15 @@ static int drm_bo_kmap_ttm(struct drm_buffer_object *bo, unsigned long start_pag
map->page = drm_ttm_get_page(ttm, start_page);
map->virtual = kmap(map->page);
} else {
/*
* Populate the part we're mapping;
*/
for (i = start_page; i< start_page + num_pages; ++i) {
d = drm_ttm_get_page(ttm, i);
if (!d)
return -ENOMEM;
}
/*
* We need to use vmap to get the desired page protection