From patchwork Wed Mar 20 10:21:40 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 10861305 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 05F0117E9 for ; Wed, 20 Mar 2019 10:21:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E767229ABD for ; Wed, 20 Mar 2019 10:21:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DBF5029AAC; Wed, 20 Mar 2019 10:21:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2D82629ABD for ; Wed, 20 Mar 2019 10:21:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727616AbfCTKVr (ORCPT ); Wed, 20 Mar 2019 06:21:47 -0400 Received: from andre.telenet-ops.be ([195.130.132.53]:55380 "EHLO andre.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727529AbfCTKVq (ORCPT ); Wed, 20 Mar 2019 06:21:46 -0400 Received: from ramsan ([84.194.111.163]) by andre.telenet-ops.be with bizsmtp id qAMk1z0023XaVaC01AMk7L; Wed, 20 Mar 2019 11:21:44 +0100 Received: from rox.of.borg ([192.168.97.57]) by ramsan with esmtp (Exim 4.90_1) (envelope-from ) id 1h6YLv-0005Fq-U4; Wed, 20 Mar 2019 11:21:43 +0100 Received: from geert by rox.of.borg with local (Exim 4.90_1) (envelope-from ) id 1h6YLv-00052w-T0; Wed, 20 Mar 2019 11:21:43 +0100 From: Geert Uytterhoeven To: Linus Walleij Cc: linux-gpio@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-sh@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH v3 09/10] pinctrl: sh-pfc: Validate enum IDs for regs with fixed-width fields Date: Wed, 20 Mar 2019 11:21:40 +0100 Message-Id: <20190320102141.19316-10-geert+renesas@glider.be> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190320102141.19316-1-geert+renesas@glider.be> References: <20190320102141.19316-1-geert+renesas@glider.be> Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add build-time checks to the PINMUX_CFG_REG() and PINMUX_DATA_REG() macros, to ensure the number of provided enum IDs is correct. This helps catching bugs early. Signed-off-by: Geert Uytterhoeven --- v3: - No changes, v2: - Convert from run-time to build-time check. - Add check for PINMUX_DATA_REG(). --- drivers/pinctrl/sh-pfc/sh_pfc.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/pinctrl/sh-pfc/sh_pfc.h b/drivers/pinctrl/sh-pfc/sh_pfc.h index 57e13b623b2e87ec..31acde5032a0691a 100644 --- a/drivers/pinctrl/sh-pfc/sh_pfc.h +++ b/drivers/pinctrl/sh-pfc/sh_pfc.h @@ -130,7 +130,9 @@ struct pinmux_cfg_reg { */ #define PINMUX_CFG_REG(name, r, r_width, f_width, ids) \ .reg = r, .reg_width = r_width, \ - .field_width = f_width + BUILD_BUG_ON_ZERO(r_width % f_width), \ + .field_width = f_width + BUILD_BUG_ON_ZERO(r_width % f_width) + \ + BUILD_BUG_ON_ZERO(sizeof((const u16 []) { ids }) / sizeof(u16) != \ + (r_width / f_width) * (1 << f_width)), \ .enum_ids = (const u16 [(r_width / f_width) * (1 << f_width)]) \ { ids } @@ -196,7 +198,9 @@ struct pinmux_data_reg { * enum ID must be specified, all wrapped using the GROUP() macro. */ #define PINMUX_DATA_REG(name, r, r_width, ids) \ - .reg = r, .reg_width = r_width, \ + .reg = r, .reg_width = r_width + \ + BUILD_BUG_ON_ZERO(sizeof((const u16 []) { ids }) / sizeof(u16) != \ + r_width), \ .enum_ids = (const u16 [r_width]) { ids } struct pinmux_irq {