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 --- drivers/gpu/drm/drm_cache.c | 7 +++---- 1 file 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;