gpu: nvgpu: Use sg_alloc_table_for_pages

Use sg_alloc_table_for_pages to create sg_table for buffers
allocated with NO_KERNEL_MAPPING. The old code returned always an
sg_table with one chunk. sg_alloc_table_for_pages returns an
sg_table which describes the actual physical chunks of the buffer.

Bug 1605769

Change-Id: I412c0151d830fa0f53dbbb08ba8cc9ebce6699e3
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/723696

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
index 0ddd9ecb..e2e5fdd7 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
@@ -1735,12 +1735,12 @@ int gk20a_get_sgtable_from_pages(struct device *d, struct sg_table **sgt,
                 err = -ENOMEM;
                 goto fail;
         }
-        err = sg_alloc_table(*sgt, 1, GFP_KERNEL);
+        err = sg_alloc_table_from_pages(*sgt, pages,
+                        DIV_ROUND_UP(size, 4096), 0, size, GFP_KERNEL);
         if (err) {
                 dev_err(d, "failed to allocate sg_table\n");
                 goto fail;
         }
-        sg_set_page((*sgt)->sgl, *pages, size, 0);
         sg_dma_address((*sgt)->sgl) = iova;
 
         return 0;