Instead of manually calculating the structure size.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NGustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/394252/