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=-2.6 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, USER_AGENT_GIT 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 C8C1FC6778F for ; Thu, 26 Jul 2018 17:14:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 777E120647 for ; Thu, 26 Jul 2018 17:14:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="cP9rko6c"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="YtC8RdOj" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 777E120647 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388644AbeGZSbr (ORCPT ); Thu, 26 Jul 2018 14:31:47 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:55218 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730095AbeGZSbq (ORCPT ); Thu, 26 Jul 2018 14:31:46 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 904D0607B9; Thu, 26 Jul 2018 17:14:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1532625242; bh=ZHJb8Jr1BxVCVwX4Qlk7PnqxLmowZsWG09QmBn6nBxg=; h=From:To:Cc:Subject:Date:From; b=cP9rko6c1OBBLYDfWDnBd19SUomVEJu12GU2PUNGZ+QwCUQTY7SeJeC18QUOrJVUG 6ulEC5ZX4i3YvSgKogd//HbBtGTTwT/REtAOFA6OS+ZQob1iI9jxL38TDcnD1BFCvr tjJMQZOoRVwe8FhvrYXHLIV6iozjd4NWf1qsGxAY= Received: from pheragu-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: pheragu@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 4F27D60C1C; Thu, 26 Jul 2018 17:14:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1532625241; bh=ZHJb8Jr1BxVCVwX4Qlk7PnqxLmowZsWG09QmBn6nBxg=; h=From:To:Cc:Subject:Date:From; b=YtC8RdOj8ZO8Ev9t6SEWi4GOB/MMgd1e66GTadRagVGU98tdQfhmSIhq7TfAEJvm+ 98fB2/YLs03S8eB4ND9v0HiE3Ft2Gd19fXVMNkOyT4XAEwqZHHAR3TBUS7zCKeVrwF H7I/ag8TrrODu0Mto/TKHOSQZ6tI+KF66RUfXzYk= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 4F27D60C1C Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=pheragu@codeaurora.org From: Prakruthi Deepak Heragu To: apw@canonical.com, joe@perches.com Cc: linux-kernel@vger.kernel.org, ckadabi@codeaurora.org, tsoni@codeaurora.org, bryanh@codeaurora.org, Abhijeet Dharmapurikar , Prakruthi Deepak Heragu Subject: [PATCH v2] checkpatch: check for #if 0/#if 1 Date: Thu, 26 Jul 2018 10:13:38 -0700 Message-Id: <1532625218-24321-1-git-send-email-pheragu@codeaurora.org> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The #if 0 or #if 1 is used to toggle features. Warn if #if 0 or #if 1 is present and suggest that they can be removed. Signed-off-by: Abhijeet Dharmapurikar Signed-off-by: Prakruthi Deepak Heragu --- Changes in v2: - Rephrase the warning for #if 0 Changes in v1: - Rephrase the warning message to fit in a single line without 80 column limit scripts/checkpatch.pl | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 3394ed8..1dfe83f 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -5383,9 +5383,14 @@ sub process { # warn about #if 0 if ($line =~ /^.\s*\#\s*if\s+0\b/) { - CHK("REDUNDANT_CODE", - "if this code is redundant consider removing it\n" . - $herecurr); + WARN("IF_0", + "Consider removing the code enclosed by this #if 0 and its #endif\n". $herecurr); + } + +# warn about #if 1 + if ($line =~ /^.\s*\#\s*if\s+1\b/) { + WARN("IF_1", + "Consider removing the #if 1 and its #endif\n". $herecurr); } # check for needless "if () fn()" uses -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project