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[2620:137:e000::1:20]) by mx.google.com with ESMTP id i12-20020a17090332cc00b001a979e702b2si2729201plr.416.2023.06.09.05.05.55; Fri, 09 Jun 2023 05:06:13 -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=@marvell.com header.s=pfpt0220 header.b="FU/7oJwe"; 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=REJECT dis=NONE) header.from=marvell.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239306AbjFIL6s (ORCPT + 99 others); Fri, 9 Jun 2023 07:58:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49048 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239670AbjFIL6n (ORCPT ); Fri, 9 Jun 2023 07:58:43 -0400 Received: from mx0b-0016f401.pphosted.com (mx0a-0016f401.pphosted.com [67.231.148.174]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A854235A7; Fri, 9 Jun 2023 04:58:37 -0700 (PDT) Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 358NXwkk009064; Fri, 9 Jun 2023 04:58:21 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=pfpt0220; bh=KYGy8FJirVbuRnOVRPtreeZfJtNYkKc3HOJaujzKkpo=; b=FU/7oJwebanhVsP8Sab5iEBNJb38AR6TzsKJgEvPBxzdl3FfEy9LsI8NCzLlRTucUjNn LxV2l2G7K62w0hKPtpYcYstPz2AJsSAO2ReGNVSpQqGv6pbjkGF3WNifUDyb5sB6q3hq 5lTIcQXEhsUnRBrNVNY91vCYbT4E6mmF4e/NgjXC95Der5H3y1swD/S0TW4jJ4Gj4xSn ls/Tb1G8KBCmJtzYPhcPUbK+OstLLgZEyTMczVyMpP0JMjNQ4r6S0c9q/FxeeKO/dt45 0H1xz1HKVVF52luj3svdmeSWa2QbBwC4IOMMiiy/6mauB9FU9MT5mrgGq32XZ0rjRM52 Ew== Received: from dc5-exch02.marvell.com ([199.233.59.182]) by mx0a-0016f401.pphosted.com (PPS) with ESMTPS id 3r329c78cc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Fri, 09 Jun 2023 04:58:21 -0700 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Fri, 9 Jun 2023 04:58:19 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.48 via Frontend Transport; Fri, 9 Jun 2023 04:58:19 -0700 Received: from hyd1425.marvell.com (unknown [10.29.37.83]) by maili.marvell.com (Postfix) with ESMTP id 590313F7057; Fri, 9 Jun 2023 04:58:14 -0700 (PDT) From: Sai Krishna To: , , , , , , , , CC: Sai Krishna , Naveen Mamindlapalli Subject: [net PATCH v2] octeontx2-af: Move validation of ptp pointer before its usage Date: Fri, 9 Jun 2023 17:28:06 +0530 Message-ID: <20230609115806.2625564-1-saikrishnag@marvell.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Proofpoint-GUID: sTtX79zfJY4Vc5BymOZw9Udj_QeotfA2 X-Proofpoint-ORIG-GUID: sTtX79zfJY4Vc5BymOZw9Udj_QeotfA2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.176.26 definitions=2023-06-09_08,2023-06-09_01,2023-05-22_02 X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED 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 Moved PTP pointer validation before its use to avoid smatch warning. Also used kzalloc/kfree instead of devm_kzalloc/devm_kfree. Fixes: 2ef4e45d99b1 ("octeontx2-af: Add PTP PPS Errata workaround on CN10K silicon") Signed-off-by: Sai Krishna Signed-off-by: Naveen Mamindlapalli --- v2: - Addressed review comments given by Maciej Fijalkowski 1. Modified patch title, commit message 2. Used kzalloc/kfree instead of devm_kzalloc/devm_kfree drivers/net/ethernet/marvell/octeontx2/af/ptp.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/ptp.c b/drivers/net/ethernet/marvell/octeontx2/af/ptp.c index 3411e2e47d46..248316c4a53f 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/ptp.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/ptp.c @@ -388,11 +388,10 @@ static int ptp_extts_on(struct ptp *ptp, int on) static int ptp_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { - struct device *dev = &pdev->dev; struct ptp *ptp; int err; - ptp = devm_kzalloc(dev, sizeof(*ptp), GFP_KERNEL); + ptp = kzalloc(sizeof(struct ptp), GFP_KERNEL); if (!ptp) { err = -ENOMEM; goto error; @@ -428,7 +427,7 @@ static int ptp_probe(struct pci_dev *pdev, return 0; error_free: - devm_kfree(dev, ptp); + kfree(ptp); error: /* For `ptp_get()` we need to differentiate between the case @@ -449,16 +448,17 @@ static void ptp_remove(struct pci_dev *pdev) struct ptp *ptp = pci_get_drvdata(pdev); u64 clock_cfg; - if (cn10k_ptp_errata(ptp) && hrtimer_active(&ptp->hrtimer)) - hrtimer_cancel(&ptp->hrtimer); - if (IS_ERR_OR_NULL(ptp)) return; + if (cn10k_ptp_errata(ptp) && hrtimer_active(&ptp->hrtimer)) + hrtimer_cancel(&ptp->hrtimer); + /* Disable PTP clock */ clock_cfg = readq(ptp->reg_base + PTP_CLOCK_CFG); clock_cfg &= ~PTP_CLOCK_CFG_PTP_EN; writeq(clock_cfg, ptp->reg_base + PTP_CLOCK_CFG); + kfree(ptp); } static const struct pci_device_id ptp_id_table[] = { -- 2.25.1