From nobody Fri Jun 19 15:45:59 2026 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 18003C433EF for ; Fri, 1 Apr 2022 23:38:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353424AbiDAXkF (ORCPT ); Fri, 1 Apr 2022 19:40:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41586 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351484AbiDAXkD (ORCPT ); Fri, 1 Apr 2022 19:40:03 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id ACC0E5D1BA for ; Fri, 1 Apr 2022 16:38:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1648856290; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=pzVHxoX5/TWOSCvHDrWIJIS9FyjyMwnU9Qnf7hNn4W4=; b=a51CKPeJuupeX1G2uk6iCX/5Pat+EWzx+7lzfP3irHmZsNxdF33eyVhE1VJhnJrKAY9Vyp oZdWm1hnvy8qtD/KuwosfOJpaLpzeApJI4qe+397fA6hUAoClB3Yf+wnjtM3YQhbtu0MT6 2oFflB9K0s7857NwmK7Cgs+gX9RDuGE= Received: from mail-qt1-f197.google.com (mail-qt1-f197.google.com [209.85.160.197]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-393-KofzvzVVOOusuBWMqdD_Sw-1; Fri, 01 Apr 2022 19:38:09 -0400 X-MC-Unique: KofzvzVVOOusuBWMqdD_Sw-1 Received: by mail-qt1-f197.google.com with SMTP id c11-20020ac87dcb000000b002eba94b13c7so837122qte.4 for ; Fri, 01 Apr 2022 16:38:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=pzVHxoX5/TWOSCvHDrWIJIS9FyjyMwnU9Qnf7hNn4W4=; b=2sBydVIV/gHxSdLkDx1sIAh9dsBWxeO1UFcvKHrqVhEAEopCbhr/s2waSbhjYwhG7k 48SmUjuEa3VyrxLrdPMcirjOZPrXw9j4VBEOrAkCxDYFX/0+tXvNu+aFDMv639ydLpVO VDKFY4jjjSxy9BHa4tcG/H6DMoOrwkoHcFfvh/MtL4UCfDBcBjXXzaK04PgRKNqcvlSo U9QmetowToAgxY/Gv+EJMsXcfhPo/s7UJZkcfJKzu9BiG0zPJr9fZ9wvQvlxcxd6pfbA Fim5ZI0BZBuPzyyCUNG+2HGpycH9t8lF5paVxXRKOcC0yId3xWX+D0nFcZjrjLwZJenM uXvw== X-Gm-Message-State: AOAM530HYkGmMgSNi53GaRVrPa0/0QYYT6hhYhDE4QlWrbP6l5mEcoT3 feM+1iKAqY/VTrmkxiKft23MP1uIiRO9NdW5OOqFO66DoV1VIhSuRL22t7erhJZ/xKohdTgvhId 9VpmBgdJXPxez4HGup2jG7UO+ X-Received: by 2002:a37:65c5:0:b0:67b:3232:8cc8 with SMTP id z188-20020a3765c5000000b0067b32328cc8mr8108204qkb.170.1648856289298; Fri, 01 Apr 2022 16:38:09 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzbWdGn+H26OktJUd2PLi1j3y1cCH3LU+ahvL7e+ZzRQY1FZAfw60USIHvnPTHEoQ8KuF5wsQ== X-Received: by 2002:a37:65c5:0:b0:67b:3232:8cc8 with SMTP id z188-20020a3765c5000000b0067b32328cc8mr8108185qkb.170.1648856289078; Fri, 01 Apr 2022 16:38:09 -0700 (PDT) Received: from dell-per740-01.7a2m.lab.eng.bos.redhat.com (nat-pool-bos-t.redhat.com. [66.187.233.206]) by smtp.gmail.com with ESMTPSA id v18-20020a05622a189200b002e22e09d77fsm2883002qtc.59.2022.04.01.16.38.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Apr 2022 16:38:08 -0700 (PDT) From: Tom Rix To: luciano.coelho@intel.com, kvalo@kernel.org, davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, nathan@kernel.org, ndesaulniers@google.com, johannes.berg@intel.com, mukesh.sisodiya@intel.com, mordechay.goodstein@intel.com, matti.gottlieb@intel.com, rotem.saado@intel.com Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, Tom Rix Subject: [PATCH] iwlwifi: fw: move memset before early return Date: Fri, 1 Apr 2022 19:38:02 -0400 Message-Id: <20220401233802.1710547-1-trix@redhat.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Clang static analysis reports this representative issue dbg.c:1455:6: warning: Branch condition evaluates to a garbage value if (!rxf_data.size) ^~~~~~~~~~~~~~ This check depends on iwl_ini_get_rxf_data() to clear rxf_data but the function can return early without doing the clear. So move the memset before the early return. Fixes: cc9b6012d34b ("iwlwifi: yoyo: use hweight_long instead of bit manipu= lating") Signed-off-by: Tom Rix --- drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wire= less/intel/iwlwifi/fw/dbg.c index abf49022edbe..666de922af61 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c @@ -1388,13 +1388,13 @@ static void iwl_ini_get_rxf_data(struct iwl_fw_runt= ime *fwrt, if (!data) return; =20 + memset(data, 0, sizeof(*data)); + /* make sure only one bit is set in only one fid */ if (WARN_ONCE(hweight_long(fid1) + hweight_long(fid2) !=3D 1, "fid1=3D%x, fid2=3D%x\n", fid1, fid2)) return; =20 - memset(data, 0, sizeof(*data)); - if (fid1) { fifo_idx =3D ffs(fid1) - 1; if (WARN_ONCE(fifo_idx >=3D MAX_NUM_LMAC, "fifo_idx=3D%d\n", --=20 2.27.0