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[2620:137:e000::1:20]) by mx.google.com with ESMTP id k63-20020a638442000000b0041bfa6fb90dsi1369372pgd.332.2022.08.26.02.53.57; Fri, 26 Aug 2022 02:54:13 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@foss.st.com header.s=selector1 header.b=oNuU5Uyj; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=foss.st.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343519AbiHZJVy (ORCPT + 99 others); Fri, 26 Aug 2022 05:21:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53350 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245405AbiHZJVx (ORCPT ); Fri, 26 Aug 2022 05:21:53 -0400 Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AACBD2772; Fri, 26 Aug 2022 02:21:52 -0700 (PDT) Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 27Q7FCEs022515; Fri, 26 Aug 2022 11:21:41 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=message-id : date : mime-version : subject : to : cc : references : from : in-reply-to : content-type : content-transfer-encoding; s=selector1; bh=CVBSjOH/bwtlQxmEDweF2DMTVjTpkvUK2sI9jy9nqCc=; b=oNuU5Uyj1VSnFR0+pfXTcPFm2jxipKb2ey6H7RtbKGYfLb/05llcdnKOkny9/BT1R+JB DcuH1dMsKg6cRJ0v+sTIBViWb4JZwTn7lpBiPocVSkOOWXwlaWgHLXqTYP95wxuYDY6K L2ihI+dsM/uE9vnZKL83IkqKhMyBazIUWCA6okh4UbZJozj4kjiYTZUMggMPaLUttkiV r03x44LMzwsuSaFJqQivlJOxLXi5Fx9vbSiMdmUpRLhCh4HImYjb7hPc9BhE1iPkymd0 U1nAjerMbfr3zPAjCllMPlcxUOIHf9vf0UkuYhBlgTQZP44QbItVXzjIyN4qlnrTIGdR kQ== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3j58m5r4v2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 26 Aug 2022 11:21:41 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id D0D3F10002A; Fri, 26 Aug 2022 11:21:40 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id CBD39217B7B; Fri, 26 Aug 2022 11:21:40 +0200 (CEST) Received: from [10.201.21.72] (10.75.127.122) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2308.20; Fri, 26 Aug 2022 11:21:40 +0200 Message-ID: <5bd8dfad-de31-a5ac-2efc-a9a3d80650f0@foss.st.com> Date: Fri, 26 Aug 2022 11:21:39 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: spi: stm32-qspi: Fix stm32_qspi_transfer_one_message() error path Content-Language: en-US To: Mark Brown CC: , , , , , Dan Carpenter References: <20220826091851.1393266-1-patrice.chotard@foss.st.com> From: Patrice CHOTARD In-Reply-To: <20220826091851.1393266-1-patrice.chotard@foss.st.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.75.127.122] X-ClientProxiedBy: GPXDAG2NODE4.st.com (10.75.127.68) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-08-26_04,2022-08-25_01,2022-06-22_01 X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,NICE_REPLY_A,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Mark Patch sent with incorrect commit title, a new one is in the pipe. Sorry for that Patrice On 8/26/22 11:18, patrice.chotard@foss.st.com wrote: > From: Patrice Chotard > > The patch a557fca630cc: "spi: stm32_qspi: Add transfer_one_message() > spi callback" from Aug 23, 2022, leads to the following Smatch static > checker warning: > > drivers/spi/spi-stm32-qspi.c:627 stm32_qspi_transfer_one_message() > error: uninitialized symbol 'ret'.Fix the following Smatch static checker warning: > > Fixes: a557fca630cc ("spi: stm32_qspi: Add transfer_one_message() spi callback") > Reported-by: Dan Carpenter > Signed-off-by: Patrice Chotard > --- > drivers/spi/spi-stm32-qspi.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c > index 92459daca95f..679fd1c34f7e 100644 > --- a/drivers/spi/spi-stm32-qspi.c > +++ b/drivers/spi/spi-stm32-qspi.c > @@ -562,7 +562,7 @@ static int stm32_qspi_transfer_one_message(struct spi_controller *ctrl, > struct spi_transfer *transfer; > struct spi_device *spi = msg->spi; > struct spi_mem_op op; > - int ret; > + int ret = 0; > > if (!spi->cs_gpiod) > return -EOPNOTSUPP; > @@ -592,8 +592,10 @@ static int stm32_qspi_transfer_one_message(struct spi_controller *ctrl, > dummy_bytes = transfer->len; > > /* if happens, means that message is not correctly built */ > - if (list_is_last(&transfer->transfer_list, &msg->transfers)) > + if (list_is_last(&transfer->transfer_list, &msg->transfers)) { > + ret = -EINVAL; > goto end_of_transfer; > + } > > transfer = list_next_entry(transfer, transfer_list); > }