From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A1632C433E1 for ; Wed, 17 Jun 2020 21:46:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B1E62184D for ; Wed, 17 Jun 2020 21:46:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592430386; bh=UbiWUnRCkAGGdldl4FnZG+4FjPU7hucL7ZHTarruCGY=; h=Date:From:To:Cc:Subject:List-ID:From; b=XMCk50vcqLkCFN6XFk74pDNBvbDfQG7+tWcfAQSDE93qhgf4dKEpCFSM4TBOaX4M0 CpRcozO2nt0NVK8qbUBRE2x6+P9g16MdKhnauyQ3ll7s6UfYDw2Bjd/WkE+o22RjPA hAdXxb9hdviu8YRV1yScKUhPelI5T8jr6f69i4aI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727052AbgFQVqZ (ORCPT ); Wed, 17 Jun 2020 17:46:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:34876 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726763AbgFQVqY (ORCPT ); Wed, 17 Jun 2020 17:46:24 -0400 Received: from embeddedor (unknown [189.207.59.248]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7CFAE2070A; Wed, 17 Jun 2020 21:46:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592430384; bh=UbiWUnRCkAGGdldl4FnZG+4FjPU7hucL7ZHTarruCGY=; h=Date:From:To:Cc:Subject:From; b=f87SYItZuGTNKJh02sXVIPBzJpsmgkahJtpOr0RouYOG8QfVe/sEaNYeO9Kvil2ch AXSPNMa8agohwn8Iivxu5YM4ZkLZpCOoctwMJO7/b1TrKHBEh2dMFnt4xWBdEl5ndN EIhPcioC/TMCpwCewUVkAQxYG9SHOmbqfINgqMas= Date: Wed, 17 Jun 2020 16:51:44 -0500 From: "Gustavo A. R. Silva" To: VMware Graphics , Roland Scheidegger , David Airlie , Daniel Vetter Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH][next] drm/vmwgfx: Use struct_size() helper Message-ID: <20200617215144.GA15547@embeddedor> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. This code was detected with the help of Coccinelle and, audited and fixed manually. Signed-off-by: Gustavo A. R. Silva --- drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c index 126f93c0b0b8..3914bfee0533 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c @@ -1969,7 +1969,7 @@ static int vmw_surface_dirty_alloc(struct vmw_resource *res) num_mip = 1; num_subres = num_layers * num_mip; - dirty_size = sizeof(*dirty) + num_subres * sizeof(dirty->boxes[0]); + dirty_size = struct_size(dirty, boxes, num_subres); acc_size = ttm_round_pot(dirty_size); ret = ttm_mem_global_alloc(vmw_mem_glob(res->dev_priv), acc_size, &ctx); -- 2.27.0