diff --git a/drivers/gpu/nvgpu/gk20a/fence_gk20a.c b/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
index c11d363e2..7228f6f70 100644
--- a/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
@@ -50,7 +50,7 @@ static void gk20a_fence_free(struct kref *ref)
 
 	if (f->allocator) {
 		if (gk20a_alloc_initialized(f->allocator))
-			gk20a_free(f->allocator, (u64)f);
+			gk20a_free(f->allocator, (size_t)f);
 	} else
 		kfree(f);
 }
@@ -130,7 +130,7 @@ int gk20a_alloc_fence_pool(struct channel_gk20a *c, int count)
 		return -ENOMEM;
 
 	err = gk20a_lockless_allocator_init(&c->fence_allocator,
-			      "fence_pool", (u64)fence_pool, size,
+			      "fence_pool", (size_t)fence_pool, size,
 			      sizeof(struct gk20a_fence), 0);
 	if (err)
 		goto fail;
@@ -145,7 +145,8 @@ fail:
 void gk20a_free_fence_pool(struct channel_gk20a *c)
 {
 	if (gk20a_alloc_initialized(&c->fence_allocator)) {
-		void *base = (void *)gk20a_alloc_base(&c->fence_allocator);
+		void *base = (void *)(uintptr_t)
+				gk20a_alloc_base(&c->fence_allocator);
 
 		gk20a_alloc_destroy(&c->fence_allocator);
 		vfree(base);
@@ -158,7 +159,7 @@ struct gk20a_fence *gk20a_alloc_fence(struct channel_gk20a *c)
 
 	if (channel_gk20a_is_prealloc_enabled(c)) {
 		if (gk20a_alloc_initialized(&c->fence_allocator)) {
-			fence = (struct gk20a_fence *)
+			fence = (struct gk20a_fence *)(uintptr_t)
 				gk20a_alloc(&c->fence_allocator,
 					sizeof(struct gk20a_fence));