From patchwork Thu Oct 27 23:16:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nathan Chancellor X-Patchwork-Id: 13022927 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5FFA6FA373D for ; Thu, 27 Oct 2022 23:18:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234291AbiJ0XSl (ORCPT ); Thu, 27 Oct 2022 19:18:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48898 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233598AbiJ0XSk (ORCPT ); Thu, 27 Oct 2022 19:18:40 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D67E5A0263; Thu, 27 Oct 2022 16:18:39 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 89186B8283C; Thu, 27 Oct 2022 23:18:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9348BC433B5; Thu, 27 Oct 2022 23:18:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666912717; bh=PsF6KK3oiuiEmQj53gDFosnftgvkXoJMatC2imaZDfI=; h=From:To:Cc:Subject:Date:From; b=rwiu193D5bUhlJHvioCfiHfdV+sfIX6pOWww2EimCM8HhSdx2EZhbeMi4eHuR6aO+ pTsIqcKJv7W5LCTGk1n5HS1GQAUZDA+zurf620nxiBYG1mPtQwyEQnFjyzl730Juqi wxQv4HbWzEDSYDr79dBLgNruwCaL1OG/G96iGQeb5tK3Gd9Njj6JNhZWT+6fr9YoMr DRMZlab8tKxWy8CqICHzqj+iyDK86xYInfS+h9LiQNklfPloEmV9/m02SVGhsrDTQv l0UYpN6xbbTqfSjrxeHanJ0Eb+V+fec05yXh0i5vacEOOj69S8XGX8QscIIlNWv/NE uMyCBpXVhaLPg== From: Nathan Chancellor To: Jean Delvare , Guenter Roeck Cc: Nick Desaulniers , Tom Rix , Quan Nguyen , linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, patches@lists.linux.dev, Nathan Chancellor Subject: [PATCH -next v2] hwmon: (smpro-hwmon) Improve switch statments in smpro_is_visible() Date: Thu, 27 Oct 2022 16:16:12 -0700 Message-Id: <20221027231611.3824800-1-nathan@kernel.org> X-Mailer: git-send-email 2.38.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org Clang warns: drivers/hwmon/smpro-hwmon.c:378:2: error: unannotated fall-through between switch labels [-Werror,-Wimplicit-fallthrough] default: ^ drivers/hwmon/smpro-hwmon.c:378:2: note: insert 'break;' to avoid fall-through default: ^ break; 1 error generated. Clang is a little more pedantic than GCC, which does not warn when falling through to a case that is just break or return. Clang's version is more in line with the kernel's own stance in deprecated.rst, which states that all switch/case blocks must end in either break, fallthrough, continue, goto, or return. Add the missing break to silence the warning. Additionally, adjust the indentation of a break and add a default case to the inner switch statement. Fixes: a87456864cbb ("hwmon: Add Ampere's Altra smpro-hwmon driver") Link: https://github.com/ClangBuiltLinux/linux/issues/1751 Signed-off-by: Nathan Chancellor --- v2: * Add missing default case to inner switch statement (Guenter) * Fix indentation of break in inner switch statement (Guenter) * Reword commit message to include these changes v1: https://lore.kernel.org/20221027195238.1789586-1-nathan@kernel.org/ drivers/hwmon/smpro-hwmon.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) base-commit: 0ffb687b6508c36a17b99bdaf014b38532404182 diff --git a/drivers/hwmon/smpro-hwmon.c b/drivers/hwmon/smpro-hwmon.c index ee54e21c2c12..a76c49dd8438 100644 --- a/drivers/hwmon/smpro-hwmon.c +++ b/drivers/hwmon/smpro-hwmon.c @@ -373,8 +373,11 @@ static umode_t smpro_is_visible(const void *data, enum hwmon_sensor_types type, ret = regmap_read(hwmon->regmap, temperature[channel].reg, &value); if (ret || value == 0xFFFF) return 0; - break; + break; + default: + break; } + break; default: break; }