From patchwork Fri Aug 13 20:30:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Shtylyov X-Patchwork-Id: 12436109 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 24B65C4338F for ; Fri, 13 Aug 2021 20:30:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0063060560 for ; Fri, 13 Aug 2021 20:30:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234226AbhHMUat (ORCPT ); Fri, 13 Aug 2021 16:30:49 -0400 Received: from mxout01.lancloud.ru ([45.84.86.81]:44094 "EHLO mxout01.lancloud.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233905AbhHMUas (ORCPT ); Fri, 13 Aug 2021 16:30:48 -0400 Received: from LanCloud DKIM-Filter: OpenDKIM Filter v2.11.0 mxout01.lancloud.ru 92C8420CFEA8 Received: from LanCloud Received: from LanCloud Received: from LanCloud Subject: [PATCH v3 1/2] usb: host: ohci-tmio: add IRQ check From: Sergey Shtylyov To: , Greg Kroah-Hartman , Felipe Balbi , Alan Stern References: Organization: Open Mobile Platform Message-ID: <402e1a45-a0a4-0e08-566a-7ca1331506b1@omp.ru> Date: Fri, 13 Aug 2021 23:30:18 +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: LFEXT02.lancloud.ru (fd00:f066::142) 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 usb_add_hcd() (which takes *unsigned* IRQ #), causing request_irq() that it calls to fail with -EINVAL, overriding an original error code. Stop calling usb_add_hcd() with the invalid IRQ #s. Fixes: 78c73414f4f6 ("USB: ohci: add support for tmio-ohci cell") Signed-off-by: Sergey Shtylyov Acked-by: Alan Stern --- Changes in version 3: - move the IRQ check higher in ohci_hcd_tmio_drv_probe(), to be closer to platfrom_get_irq()'s call. drivers/usb/host/ohci-tmio.c | 3 +++ 1 file changed, 3 insertions(+) Index: usb/drivers/usb/host/ohci-tmio.c =================================================================== --- usb.orig/drivers/usb/host/ohci-tmio.c +++ usb/drivers/usb/host/ohci-tmio.c @@ -202,6 +202,9 @@ static int ohci_hcd_tmio_drv_probe(struc if (!cell) return -EINVAL; + if (irq < 0) + return irq; + hcd = usb_create_hcd(&ohci_tmio_hc_driver, &dev->dev, dev_name(&dev->dev)); if (!hcd) { ret = -ENOMEM;