[PATCH] drm/nouveau/nvif: use struct_size()

[Su Hui]

Use struct_size() instead of hand writing it.
This is less verbose and more informative.

Signed-off-by: Su Hui <su...@nfschina.com>
---
 drivers/gpu/drm/nouveau/nvif/object.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvif/object.c 
b/drivers/gpu/drm/nouveau/nvif/object.c
index 4d1aaee8fe15..4bd693aa4ee0 100644
--- a/drivers/gpu/drm/nouveau/nvif/object.c
+++ b/drivers/gpu/drm/nouveau/nvif/object.c
@@ -65,7 +65,7 @@ nvif_object_sclass_get(struct nvif_object *object, struct 
nvif_sclass **psclass)
        u32 size;
 
        while (1) {
-               size = sizeof(*args) + cnt * sizeof(args->sclass.oclass[0]);
+               size = struct_size(args, sclass.oclass, cnt);
                if (!(args = kmalloc(size, GFP_KERNEL)))
                        return -ENOMEM;
                args->ioctl.version = 0;
-- 
2.30.2