From patchwork Tue Mar 10 12:38:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 229752 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 6D8CFC18E5B for ; Tue, 10 Mar 2020 12:49:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4425120674 for ; Tue, 10 Mar 2020 12:49:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583844592; bh=gv6GqbAuDDbgr1R9cOCkCMZgTenrheR/uwPK7uFGFQc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=x1FfzRKxUB9EDrDUqehbRWFiie9NsjSsqC6u81KAXEhmAwuocsQyzrn+VHZI92L8Y VmwC0u0HRq57JYX/sK15vL30OSmIJPWkTGG/MxMYLOu2HHzXqiu9drZEclJK+FgdaC UKXcZYu+HAWrNIWlMtfYTLqGcc+ljSoN7xvMGeO0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728501AbgCJMtt (ORCPT ); Tue, 10 Mar 2020 08:49:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:54298 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728496AbgCJMts (ORCPT ); Tue, 10 Mar 2020 08:49:48 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 03CF02467D; Tue, 10 Mar 2020 12:49:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583844588; bh=gv6GqbAuDDbgr1R9cOCkCMZgTenrheR/uwPK7uFGFQc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CUT2frWF7lm9ohu/TlFYKiIoZM+s6w3Zjmh/KTur+7QLv0tFRE3SQcann7nw33H/f OnxHgElTmtL9jvnWz47tSVITf8AiZ5Z8sGSH55wmEvE09F/RyhHW1fQNFm4XqU1evG CM3Sf5TtaISKPQjNwXn9hwzgMLtmqijH5Z5OhJoA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Arnd Bergmann , Christoph Hellwig , Keith Busch , Sasha Levin Subject: [PATCH 5.4 046/168] nvme: Fix uninitialized-variable warning Date: Tue, 10 Mar 2020 13:38:12 +0100 Message-Id: <20200310123640.026189189@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200310123635.322799692@linuxfoundation.org> References: <20200310123635.322799692@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Keith Busch [ Upstream commit 15755854d53b4bbb0bb37a0fce66f0156cfc8a17 ] gcc may detect a false positive on nvme using an unintialized variable if setting features fails. Since this is not a fast path, explicitly initialize this variable to suppress the warning. Reported-by: Arnd Bergmann Reviewed-by: Christoph Hellwig Signed-off-by: Keith Busch Signed-off-by: Sasha Levin --- drivers/nvme/host/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 7dacfd102a992..b8fe42f4b3c5b 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1161,8 +1161,8 @@ static int nvme_identify_ns(struct nvme_ctrl *ctrl, static int nvme_features(struct nvme_ctrl *dev, u8 op, unsigned int fid, unsigned int dword11, void *buffer, size_t buflen, u32 *result) { + union nvme_result res = { 0 }; struct nvme_command c; - union nvme_result res; int ret; memset(&c, 0, sizeof(c));