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Sat, 3 Mar 2018 19:24:42 -0500 Received: from mail-sn1nam01on0095.outbound.protection.outlook.com ([104.47.32.95]:42182 "EHLO NAM01-SN1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933185AbeCCW2S (ORCPT ); Sat, 3 Mar 2018 17:28:18 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Alexey Khoroshilov , Alexandre Belloni , Sasha Levin Subject: [PATCH AUTOSEL for 4.14 21/84] rtc: brcmstb-waketimer: fix error handling in brcmstb_waketmr_probe() Thread-Topic: [PATCH AUTOSEL for 4.14 21/84] rtc: brcmstb-waketimer: fix error handling in brcmstb_waketmr_probe() Thread-Index: AQHTsz6iRSi3aenHgUy0tI3pIPdrpQ== Date: Sat, 3 Mar 2018 22:26:12 +0000 Message-ID: <20180303222518.26271-21-alexander.levin@microsoft.com> References: <20180303222518.26271-1-alexander.levin@microsoft.com> In-Reply-To: <20180303222518.26271-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;MW2PR2101MB1115;7:ABfI7fIwUaLg3d+zQIseHtqhpvhCs/5N1TCwwnNMghnikv69uFTuUj8l/ZXFU9Hcwbrwii8KGmoMjuhMAaFRLjq8oXzh88l9zWh9AaxuPee4wi53Sr9w/GodaGITO8LcWBd/5pocZI5ANvKklWx+ZWBlraG47HWNpPh7vST66Pn7AeVDbd28C9PLDehpLzg88y65x73AWki5nWXGs3pQgORdMXatjy+WF6CMki1vJQ+gltKsmsNwVTT5w8G8kDCB x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 7eb32829-e856-471e-ac97-08d581560f8f x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603307)(7193020);SRVR:MW2PR2101MB1115; 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x-microsoft-antispam-message-info: Cc7JxJv295iJPbPYxKzveMi3L1kw0a97Ve57UXXMvNDnUptaGM8m8/i646LSRBCSkfddFd357zZKGxrKVWCpMFxtF8eO+yqd4v+crFPjqcwGDWYjKURVTtuAlOccnxRSbzEjyLmtC5N+ZT7+CWXQALPpdHL3ibCgLlvLcG4Uknw= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 7eb32829-e856-471e-ac97-08d581560f8f X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Mar 2018 22:26:12.1660 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW2PR2101MB1115 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Alexey Khoroshilov [ Upstream commit f2eef045de9defbc6fc6b72b17f0941cbe26c81d ] brcmstb_waketmr_probe() does not disable timer->clk on error paths. Found by Linux Driver Verification project (linuxtesting.org). Fixes: c4f07ecee22e ("rtc: brcmstb-waketimer: Add Broadcom STB wake-timer") Signed-off-by: Alexey Khoroshilov Reviewed-by: Florian Fainelli Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin --- drivers/rtc/rtc-brcmstb-waketimer.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/rtc/rtc-brcmstb-waketimer.c b/drivers/rtc/rtc-brcmstb-= waketimer.c index 796ac792a381..6cee61201c30 100644 --- a/drivers/rtc/rtc-brcmstb-waketimer.c +++ b/drivers/rtc/rtc-brcmstb-waketimer.c @@ -253,7 +253,7 @@ static int brcmstb_waketmr_probe(struct platform_device= *pdev) ret =3D devm_request_irq(dev, timer->irq, brcmstb_waketmr_irq, 0, "brcmstb-waketimer", timer); if (ret < 0) - return ret; + goto err_clk; =20 timer->reboot_notifier.notifier_call =3D brcmstb_waketmr_reboot; register_reboot_notifier(&timer->reboot_notifier); @@ -262,12 +262,21 @@ static int brcmstb_waketmr_probe(struct platform_devi= ce *pdev) &brcmstb_waketmr_ops, THIS_MODULE); if (IS_ERR(timer->rtc)) { dev_err(dev, "unable to register device\n"); - unregister_reboot_notifier(&timer->reboot_notifier); - return PTR_ERR(timer->rtc); + ret =3D PTR_ERR(timer->rtc); + goto err_notifier; } =20 dev_info(dev, "registered, with irq %d\n", timer->irq); =20 + return 0; + +err_notifier: + unregister_reboot_notifier(&timer->reboot_notifier); + +err_clk: + if (timer->clk) + clk_disable_unprepare(timer->clk); + return ret; } =20 --=20 2.14.1