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drm/i915/selftests: Use sgt_iter for huge_pages_free 

Use the normal sgt_iter to walk the pages scatterlist on free so that we
handle the error path correctly.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112225
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128232946.546831-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-11-28 23:29:46 +00:00
parent ff690b2111
commit 6930573279
1 changed files with 7 additions and 4 deletions
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11
drivers/gpu/drm/i915/gem/selftests/huge_gem_object.c
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@ -12,10 +12,14 @@ static void huge_free_pages(struct drm_i915_gem_object *obj,
struct sg_table *pages)
{
unsigned long nreal = obj->scratch / PAGE_SIZE;
struct scatterlist *sg;
struct sgt_iter sgt_iter;
struct page *page;
for (sg = pages->sgl; sg && nreal--; sg = __sg_next(sg))
__free_page(sg_page(sg));
for_each_sgt_page(page, sgt_iter, pages) {
__free_page(page);
if (!--nreal)
break;
}
sg_free_table(pages);
kfree(pages);
@ -70,7 +74,6 @@ static int huge_get_pages(struct drm_i915_gem_object *obj)
err:
huge_free_pages(obj, pages);
return -ENOMEM;
#undef GFP
}