[PATCH 6/6] drm/msm/gem: Drop use of drm_prime_sg_to_page_array()

[Rob Clark <robin.clark@oss.qualcomm.com>]

Now that we've removed any use of the page array outside of paths that
are restricted to native (non-imported) objs, we can remove use of the
deprecated function and allow msm_obj->pages to be NULL for imported
dma-bufs.

Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
---
 drivers/gpu/drm/msm/msm_gem.c | 27 ++-------------------------
 1 file changed, 2 insertions(+), 25 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index 3111d7389572..130ae27ee00b 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -1116,11 +1116,6 @@ static void msm_gem_free_object(struct drm_gem_object *obj)
 	if (drm_gem_is_imported(obj)) {
 		GEM_WARN_ON(msm_obj->vaddr);
 
-		/* Don't drop the pages for imported dmabuf, as they are not
-		 * ours, just free the array we allocated:
-		 */
-		kvfree(msm_obj->pages);
-
 		/* In msm_gem_import() error path, sgt won't be set yet: */
 		if (msm_obj->sgt)
 			drm_prime_gem_destroy(obj, msm_obj->sgt);
@@ -1350,14 +1345,10 @@ struct drm_gem_object *msm_gem_import(struct drm_device *dev,
 				      struct dma_buf_attachment *attach,
 				      struct sg_table *sgt)
 {
-	struct msm_gem_object *msm_obj;
 	struct drm_gem_object *obj;
 	struct dma_buf *dmabuf = attach->dmabuf;
-	size_t size, npages;
 	int ret;
 
-	size = PAGE_ALIGN(dmabuf->size);
-
 	ret = msm_gem_new_impl(dev, MSM_BO_WC, &obj);
 	if (ret)
 		return ERR_PTR(ret);
@@ -1368,28 +1359,14 @@ struct drm_gem_object *msm_gem_import(struct drm_device *dev,
 	 */
 	obj->import_attach = attach;
 	obj->resv = dmabuf->resv;
-	drm_gem_private_object_init(dev, obj, size);
-
-	npages = size / PAGE_SIZE;
-
-	msm_obj = to_msm_bo(obj);
-	msm_obj->pages = kvmalloc_objs(struct page *, npages);
-	if (!msm_obj->pages) {
-		ret = -ENOMEM;
-		goto fail;
-	}
-
-	ret = drm_prime_sg_to_page_array(sgt, msm_obj->pages, npages);
-	if (ret) {
-		goto fail;
-	}
+	drm_gem_private_object_init(dev, obj, PAGE_ALIGN(dmabuf->size));
 
 	ret = msm_gem_init_bookkeeping(obj);
 	if (ret)
 		goto fail;
 
 	/* Now that we are past potential failure points, set sgt: */
-	msm_obj->sgt = sgt;
+	to_msm_bo(obj)->sgt = sgt;
 
 	return obj;
 
-- 
2.55.0