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authorImre Deak <imre.deak@intel.com>2013-02-18 17:28:01 (GMT)
committerDaniel Vetter <daniel.vetter@ffwll.ch>2013-03-19 08:50:22 (GMT)
commitf5ddf69736fb328800ccd1a06fe69ad2e830adbe (patch)
tree50be97730f9ac64e10fc0fd444c265c1a4b1d44f /drivers/gpu/drm/drm_cache.c
parent0d4a42f6bd298e826620585e766a154ab460617a (diff)
downloadlinux-f5ddf69736fb328800ccd1a06fe69ad2e830adbe.tar.xz
drm: handle compact dma scatter lists in drm_clflush_sg()
So far the assumption was that each scatter list entry contains a single page. This might not hold in the future, when we'll introduce compact scatter lists, so prepare for this here. Reference: http://www.spinics.net/lists/dri-devel/msg33917.html Signed-off-by: Imre Deak <imre.deak@intel.com> Acked-by: Dave Airlie <airlied@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/drm_cache.c')
-rw-r--r--drivers/gpu/drm/drm_cache.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_cache.c b/drivers/gpu/drm/drm_cache.c
index a575cb2..bc8edbe 100644
--- a/drivers/gpu/drm/drm_cache.c
+++ b/drivers/gpu/drm/drm_cache.c
@@ -105,12 +105,11 @@ drm_clflush_sg(struct sg_table *st)
{
#if defined(CONFIG_X86)
if (cpu_has_clflush) {
- struct scatterlist *sg;
- int i;
+ struct sg_page_iter sg_iter;
mb();
- for_each_sg(st->sgl, sg, st->nents, i)
- drm_clflush_page(sg_page(sg));
+ for_each_sg_page(st->sgl, &sg_iter, st->nents, 0)
+ drm_clflush_page(sg_iter.page);
mb();
return;