From patchwork Wed Oct 7 16:03:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 11820871 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4773C618 for ; Wed, 7 Oct 2020 15:57:30 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1165A215A4 for ; Wed, 7 Oct 2020 15:57:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="vLK1rIEQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1165A215A4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BB1BE6E93B; Wed, 7 Oct 2020 15:57:28 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4CB796E936; Wed, 7 Oct 2020 15:57:27 +0000 (UTC) Received: from embeddedor (187-162-31-110.static.axtel.net [187.162.31.110]) (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 02FE520789; Wed, 7 Oct 2020 15:57:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1602086247; bh=G0lgH6he/DahzFqP5FRpqz/WY6rYK4qxxqp6/q4ygxk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=vLK1rIEQ31Dxq3kj3L07dUw6bF7o4F6aLSLq8v7grzY4RqA2P9ZAZZaGETC41vSRC /IUbAntDwdlho+44fbct2gXqcEyfaPFy+g8H5qjYqB5eUp+JxZKyjIvJ1dLPiLPkDP aL1TkMNAYUDAmqTujHdh9EGn/mt87necPjCVlJRY= Date: Wed, 7 Oct 2020 11:03:27 -0500 From: "Gustavo A. R. Silva" To: linux-kernel@vger.kernel.org Subject: [PATCH 02/14] drm/amd/pm: Replace one-element array with flexible-array member in struct vi_dpm_table Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , dri-devel@lists.freedesktop.org, "Gustavo A. R. Silva" , amd-gfx@lists.freedesktop.org, linux-hardening@vger.kernel.org, Alex Deucher , Christian =?iso-8859-1?q?K=F6nig?= Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. Use a flexible-array member in struct vi_dpm_table instead of a one-element array. [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.9-rc1/process/deprecated.html#zero-length-and-one-element-arrays Build-tested-by: kernel test robot Link: https://lore.kernel.org/lkml/5f7c433c.TTk9rnA+F58kyDUy%25lkp@intel.com/ Signed-off-by: Gustavo A. R. Silva --- drivers/gpu/drm/amd/pm/inc/hwmgr.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/pm/inc/hwmgr.h b/drivers/gpu/drm/amd/pm/inc/hwmgr.h index a1dbfd5636e6..d68b547743e6 100644 --- a/drivers/gpu/drm/amd/pm/inc/hwmgr.h +++ b/drivers/gpu/drm/amd/pm/inc/hwmgr.h @@ -60,7 +60,7 @@ struct vi_dpm_level { struct vi_dpm_table { uint32_t count; - struct vi_dpm_level dpm_level[1]; + struct vi_dpm_level dpm_level[]; }; #define PCIE_PERF_REQ_REMOVE_REGISTRY 0