From patchwork Fri Aug 13 20:32:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Shtylyov X-Patchwork-Id: 12436111 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=-15.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_SANE_1 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 960DFC4338F for ; Fri, 13 Aug 2021 20:32:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7069660560 for ; Fri, 13 Aug 2021 20:32:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234037AbhHMUdI (ORCPT ); Fri, 13 Aug 2021 16:33:08 -0400 Received: from mxout03.lancloud.ru ([45.84.86.113]:51504 "EHLO mxout03.lancloud.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233915AbhHMUdI (ORCPT ); Fri, 13 Aug 2021 16:33:08 -0400 Received: from LanCloud DKIM-Filter: OpenDKIM Filter v2.11.0 mxout03.lancloud.ru F0FFE208EBFD Received: from LanCloud Received: from LanCloud Received: from LanCloud Subject: [PATCH v3 2/2] usb: phy: tahvo: add IRQ check From: Sergey Shtylyov To: , Greg Kroah-Hartman , Felipe Balbi References: Organization: Open Mobile Platform Message-ID: <8280d6a4-8e9a-7cfe-1aa9-db586dc9afdf@omp.ru> Date: Fri, 13 Aug 2021 23:32:38 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Originating-IP: [192.168.11.198] X-ClientProxiedBy: LFEXT01.lancloud.ru (fd00:f066::141) To LFEX1907.lancloud.ru (fd00:f066::207) Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The driver neglects to check the result of platform_get_irq()'s call and blithely passes the negative error codes to request_threaded_irq() (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original error code. Stop calling request_threaded_irq() with the invalid IRQ #s. Fixes: 9ba96ae5074c ("usb: omap1: Tahvo USB transceiver driver") Signed-off-by: Sergey Shtylyov Acked-by: Felipe Balbi --- drivers/usb/phy/phy-tahvo.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) Index: usb/drivers/usb/phy/phy-tahvo.c =================================================================== --- usb.orig/drivers/usb/phy/phy-tahvo.c +++ usb/drivers/usb/phy/phy-tahvo.c @@ -393,7 +393,9 @@ static int tahvo_usb_probe(struct platfo dev_set_drvdata(&pdev->dev, tu); - tu->irq = platform_get_irq(pdev, 0); + tu->irq = ret = platform_get_irq(pdev, 0); + if (ret < 0) + return ret; ret = request_threaded_irq(tu->irq, NULL, tahvo_usb_vbus_interrupt, IRQF_ONESHOT, "tahvo-vbus", tu);