gpu: nvgpu: Avoid 64 bit division

Avoid doing 64bit division in the page allocator. This causes problems
on 32 bit platforms.

Bug 1799159

Change-Id: I5166a71a4e84454686cce6d6cdca678a862a7ae7
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1236799
(cherry picked from commit 21c091d1c00433acb9965c3d348d16fbb4c50c1a)
Reviewed-on: http://git-master/r/1236195
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c b/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c
index b8e38620..bc769a2b 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c
@@ -229,7 +229,7 @@ static struct page_alloc_slab_page *alloc_slab_page(
 
         INIT_LIST_HEAD(&slab_page->list_entry);
         slab_page->slab_size = slab->slab_size;
-        slab_page->nr_objects = a->page_size / slab->slab_size;
+        slab_page->nr_objects = (u32)a->page_size / slab->slab_size;
         slab_page->nr_objects_alloced = 0;
         slab_page->owner = slab;
         slab_page->state = SP_NONE;
@@ -389,7 +389,7 @@ static void __gk20a_free_slab(struct gk20a_page_allocator *a,
         enum slab_page_state new_state;
         int offs;
 
-        offs = (alloc->base - slab_page->page_addr) / slab_page->slab_size;
+        offs = (u32)(alloc->base - slab_page->page_addr) / slab_page->slab_size;
         bitmap_clear(&slab_page->bitmap, offs, 1);
 
         slab_page->nr_objects_alloced--;