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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8623C433F5 for ; Sat, 5 Mar 2022 20:33:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232336AbiCEUdt (ORCPT ); Sat, 5 Mar 2022 15:33:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50028 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232026AbiCEUdr (ORCPT ); Sat, 5 Mar 2022 15:33:47 -0500 Received: from mail-ej1-x630.google.com (mail-ej1-x630.google.com [IPv6:2a00:1450:4864:20::630]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 570F637A0D; Sat, 5 Mar 2022 12:32:57 -0800 (PST) Received: by mail-ej1-x630.google.com with SMTP id hw13so24094504ejc.9; Sat, 05 Mar 2022 12:32:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=TM7AJ3oV8U7FFNZXKPP4XmzZhp+z4fppZRqXUBC++Es=; b=oxAiU4WHINe5aXbVEEPXKwclHX/bukULVnkmG1gef5WWbxTnrrBZjNtWaNjTLfWlIB MPyr3S8/NnwZFQEJvnYuAhJZJE8XQbxfkBbv22C5Xy8DfuERg0cTrZlyFup+wWP/3j8b evjRuIwZu8y3fP/rnhuoY4ohH1QcsPg8T/IGatQSQsNV5uYOa8P5PFdERiDMgtkwXu+/ DynafjDZQIBVYM8bKq8RfgR91qkSvNpWKB4f1AzeK6zkExI13uLfLcy2z8olLecG38Wi kLTnffmOMU1ZNRo14VVrr027wlB1k0fwc08MKmDpPljJwfQmJoku3NZ8UdiuVvHv260G y64w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=TM7AJ3oV8U7FFNZXKPP4XmzZhp+z4fppZRqXUBC++Es=; b=BvJs//sASv9okaVtY6ONOPu0lbsKtwpRzUU7K/mAX3Sba/Bppu1xXu+jNMp7VVUoCR Frfdz9b7y32vEjOwoV/gU7M7InfoLJyLdlAr1PdDaQfG21REzdHRyo3A8Yi0HBsG+kbT 8p1Sp7a/IYe65HDlCeJr4Hu/6LF0v5qehkvqIcJO2lPpIsmdokiaCsmVQ8CdeiOH+MP6 iOkHoT8wSxTTFNZWOOkhvAggz7V6Qh8TUj5k6EezzxJJenpl3ZiqJy1/psntESNd/I8d 30jEFapZxbsiwfQuMvUny8ncfLk/b+uWz0E8rXJOxjGIut7VxpXbF5YvM94r20YtBK7U EVoA== X-Gm-Message-State: AOAM533tlM9dscwT4Ll5HwmK8Bg5lIzeZ6Pfy5QxqhH3IBE4V3sjbbLz Yq35qmSMa6WRK9STms70YbwZYlF2GfI= X-Google-Smtp-Source: ABdhPJxp8ix2jRhbPodIgYkSU2BgAit7LXO5fGU5WCq3I57X+GzY+E7e81UPuJgiCKquWySlcwTc5w== X-Received: by 2002:a17:906:4313:b0:6b8:b3e5:a46 with SMTP id j19-20020a170906431300b006b8b3e50a46mr3854405ejm.417.1646512375685; Sat, 05 Mar 2022 12:32:55 -0800 (PST) Received: from skbuf ([188.25.231.156]) by smtp.gmail.com with ESMTPSA id y12-20020a056402358c00b00415b3d2b79dsm3856201edc.97.2022.03.05.12.32.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 05 Mar 2022 12:32:55 -0800 (PST) Date: Sat, 5 Mar 2022 22:32:53 +0200 From: Vladimir Oltean To: trix@redhat.com Cc: andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com, davem@davemloft.net, kuba@kernel.org, nathan@kernel.org, ndesaulniers@google.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev Subject: Re: [PATCH] net: dsa: return success if there was nothing to do Message-ID: <20220305203253.jso2wergnn5c7fsx@skbuf> References: <20220305171448.692839-1-trix@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220305171448.692839-1-trix@redhat.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Sat, Mar 05, 2022 at 09:14:48AM -0800, trix@redhat.com wrote: > From: Tom Rix > > Clang static analysis reports this representative issue > dsa.c:486:2: warning: Undefined or garbage value > returned to caller > return err; > ^~~~~~~~~~ > > err is only set in the loop. If the loop is empty, > garbage will be returned. So initialize err to 0 > to handle this noop case. > > Signed-off-by: Tom Rix > --- Reviewed-by: Vladimir Oltean