gpu: nvgpu: fix compilation errors for 32 bit arch

Converting return value of sg_dma_address() (which is u64)
into a pointer results in compilation failure on 32 bit
machines

Hence convert address first into uintptr_t and then into
pointer

Change-Id: I8e036af8f4c936b88883cf8af1491f03025ed356
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1211243
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 7 insertions, 6 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
index 08fbfb80..876f3115 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
@@ -148,7 +148,8 @@ static inline void pramin_access_batched(struct gk20a *g, struct mem_desc *mem,
         struct page_alloc_chunk *chunk = NULL;
         u32 byteoff, start_reg, until_end, n;
 
-        alloc = (struct gk20a_page_alloc *)sg_dma_address(mem->sgt->sgl);
+        alloc = (struct gk20a_page_alloc *)(uintptr_t)
+                                sg_dma_address(mem->sgt->sgl);
         list_for_each_entry(chunk, &alloc->alloc_chunks, list_entry) {
                 if (offset >= chunk->length)
                         offset -= chunk->length;
@@ -2191,7 +2192,7 @@ static u64 gk20a_mm_get_align(struct gk20a *g, struct scatterlist *sgl,
 
         if (aperture == APERTURE_VIDMEM) {
                 struct gk20a_page_alloc *alloc = (struct gk20a_page_alloc *)
-                                                  sg_dma_address(sgl);
+                                        (uintptr_t)sg_dma_address(sgl);
                 struct page_alloc_chunk *chunk = NULL;
 
                 list_for_each_entry(chunk, &alloc->alloc_chunks, list_entry) {
@@ -2899,7 +2900,7 @@ static int gk20a_gmmu_clear_vidmem_mem(struct gk20a *g, struct mem_desc *mem)
         if (g->mm.vidmem.ce_ctx_id == ~0)
                 return -EINVAL;
 
-        alloc = (struct gk20a_page_alloc *)
+        alloc = (struct gk20a_page_alloc *)(uintptr_t)
                         sg_dma_address(mem->sgt->sgl);
 
         list_for_each_entry(chunk, &alloc->alloc_chunks, list_entry) {
@@ -3100,8 +3101,8 @@ u64 gk20a_mem_get_base_addr(struct gk20a *g, struct mem_desc *mem,
         u64 addr;
 
         if (mem->aperture == APERTURE_VIDMEM) {
-                alloc = (struct gk20a_page_alloc *)
-                                        sg_dma_address(mem->sgt->sgl);
+                alloc = (struct gk20a_page_alloc *)(uintptr_t)
+                                sg_dma_address(mem->sgt->sgl);
 
                 /* This API should not be used with > 1 chunks */
                 WARN_ON(alloc->nr_chunks != 1);
@@ -3718,7 +3719,7 @@ static int update_gmmu_ptes_locked(struct vm_gk20a *vm,
                                 pgsz_idx, gpu_va, gpu_end-1, iova);
 
                 if (sgt) {
-                        alloc = (struct gk20a_page_alloc *)
+                        alloc = (struct gk20a_page_alloc *)(uintptr_t)
                                         sg_dma_address(sgt->sgl);
 
                         list_for_each_entry(chunk, &alloc->alloc_chunks,