From patchwork Mon May 16 19:36:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 573876 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 05180C433F5 for ; Mon, 16 May 2022 19:39:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345663AbiEPTjt (ORCPT ); Mon, 16 May 2022 15:39:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44074 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345517AbiEPTi5 (ORCPT ); Mon, 16 May 2022 15:38:57 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 319D23F306; Mon, 16 May 2022 12:38:46 -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 B67D6B81611; Mon, 16 May 2022 19:38:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2B4AC385AA; Mon, 16 May 2022 19:38:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1652729923; bh=KMsSJKuTd6UrANIy+gvmfyCQKuG8/0qFGqtBNnYC7DQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tBf6Hamlo4x+wJUEovEa8VNMUS5CNqoZYHehMXU5pyfxPKPcdKpVN4fQIlhBRf+dN 7fkZ/HTh0uXbn5H7Urn2t/4XBIexnSQZ+olX+ZsSsMtHrzqibvwkveE1l2lbSy3VBm LrCvGjif6ow7f8no6BuinsiqlhFUA9PJCpEad3Lo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alexandra Winter , "David S. Miller" , Sasha Levin Subject: [PATCH 4.9 07/19] s390/lcs: fix variable dereferenced before check Date: Mon, 16 May 2022 21:36:20 +0200 Message-Id: <20220516193613.719040783@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220516193613.497233635@linuxfoundation.org> References: <20220516193613.497233635@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Alexandra Winter [ Upstream commit 671bb35c8e746439f0ed70815968f9a4f20a8deb ] smatch complains about drivers/s390/net/lcs.c:1741 lcs_get_control() warn: variable dereferenced before check 'card->dev' (see line 1739) Fixes: 27eb5ac8f015 ("[PATCH] s390: lcs driver bug fixes and improvements [1/2]") Signed-off-by: Alexandra Winter Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/s390/net/lcs.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c index 251db0a02e73..4d3caad7e981 100644 --- a/drivers/s390/net/lcs.c +++ b/drivers/s390/net/lcs.c @@ -1761,10 +1761,11 @@ lcs_get_control(struct lcs_card *card, struct lcs_cmd *cmd) lcs_schedule_recovery(card); break; case LCS_CMD_STOPLAN: - pr_warn("Stoplan for %s initiated by LGW\n", - card->dev->name); - if (card->dev) + if (card->dev) { + pr_warn("Stoplan for %s initiated by LGW\n", + card->dev->name); netif_carrier_off(card->dev); + } break; default: LCS_DBF_TEXT(5, trace, "noLGWcmd");