From patchwork Mon Aug 9 20:27:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Shtylyov X-Patchwork-Id: 12427245 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=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 2442FC4338F for ; Mon, 9 Aug 2021 20:29:37 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 885A261040 for ; Mon, 9 Aug 2021 20:29:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 885A261040 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=omp.ru Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:References:To:From:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=vkwsloyuKfJFDBS2FUalNhcomA0eyP+z817suawEOqY=; b=1TEnr5GJJMNsLH i9ETLORf+Ej6y1xuFES7esi+2c/CEASl6kQSfvs2/kpm6S36Z7SLcbcFdX7s0tSk27sXH4AspGgBd zpRPJjUdFzjPHoBEoRZ5hKqQEx+zq5QQ7FxmGZDwGC7GQrSGFrZ7zCAIieldedwiAtheXGYuJbUP4 qPRsxtgd6sGho/WSkidFr8BYyH8sbQzCivl9vIQkm6WdtbqtNXlnOCM27iEQrwMNtvwAFQXIm654j VLHjFJmUv0qdtCYBBzUa4N/MWtYd5sQkChX0na3NHx8VXlxT4HwtGN1cNVxlFT/tct+2CklhRHKWk qMX/meFArhuZhu1gp0EQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mDBs1-001wzW-43; Mon, 09 Aug 2021 20:27:37 +0000 Received: from mxout04.lancloud.ru ([45.84.86.114]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mDBrx-001wys-9B for linux-arm-kernel@lists.infradead.org; Mon, 09 Aug 2021 20:27:35 +0000 Received: from LanCloud DKIM-Filter: OpenDKIM Filter v2.11.0 mxout04.lancloud.ru 2B80F20B305A Received: from LanCloud Received: from LanCloud Received: from LanCloud Subject: [PATCH v2 3/6] usb: gadget: udc: at91: add IRQ check From: Sergey Shtylyov To: , Greg Kroah-Hartman , Felipe Balbi References: <47bacc02-4e34-3208-779c-7072a6261782@omp.ru> Organization: Open Mobile Platform Message-ID: <6654a224-739a-1a80-12f0-76d920f87b6c@omp.ru> Date: Mon, 9 Aug 2021 23:27:28 +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: <47bacc02-4e34-3208-779c-7072a6261782@omp.ru> 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) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210809_132733_551378_28478643 X-CRM114-Status: GOOD ( 12.82 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexandre Belloni , Ludovic Desroches , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The driver neglects to check the result of platform_get_irq()'s call and blithely passes the negative error codes to devm_request_irq() (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original error code. Stop calling devm_request_irq() with the invalid IRQ #s. Fixes: 8b2e76687b39 ("USB: AT91 UDC updates, mostly power management") Signed-off-by: Sergey Shtylyov Acked-by: Felipe Balbi --- Changes in version 2: - added Felipe's ACK. drivers/usb/gadget/udc/at91_udc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) Index: usb/drivers/usb/gadget/udc/at91_udc.c =================================================================== --- usb.orig/drivers/usb/gadget/udc/at91_udc.c +++ usb/drivers/usb/gadget/udc/at91_udc.c @@ -1876,7 +1876,9 @@ static int at91udc_probe(struct platform clk_disable(udc->iclk); /* request UDC and maybe VBUS irqs */ - udc->udp_irq = platform_get_irq(pdev, 0); + udc->udp_irq = retval = platform_get_irq(pdev, 0); + if (retval < 0) + goto err_unprepare_iclk; retval = devm_request_irq(dev, udc->udp_irq, at91_udc_irq, 0, driver_name, udc); if (retval) {