From patchwork Mon Sep 13 13:14:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 510432 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT 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 48590C433F5 for ; Mon, 13 Sep 2021 14:36:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2D07C60E08 for ; Mon, 13 Sep 2021 14:36:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346044AbhIMOhS (ORCPT ); Mon, 13 Sep 2021 10:37:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:53786 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347790AbhIMOfc (ORCPT ); Mon, 13 Sep 2021 10:35:32 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id EF6FB6187A; Mon, 13 Sep 2021 13:53:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1631541214; bh=HBTmjRiToZImigBncE/nlCtd+VG7mpo2iB6sHH8Q5A0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vkClGtLqkO9S79BbGWAJgbGkDJ3gzlLg3hnMFMk7c9kJ5ov0TG0bJ9mBznV9J/tMu JWILKOT76RzV5GbfIc+mM4KbxEmhqCdvJrZl9TRZdNne+FvdBA8icq6jnGjOLO8xHs 3jK1k3VeHoCx+ZSOHES2zyfAyS7M6HLJggew2Sbo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Krzysztof Kozlowski , Felipe Balbi , Sergey Shtylyov , Sasha Levin Subject: [PATCH 5.14 202/334] usb: gadget: udc: s3c2410: add IRQ check Date: Mon, 13 Sep 2021 15:14:16 +0200 Message-Id: <20210913131120.236416533@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210913131113.390368911@linuxfoundation.org> References: <20210913131113.390368911@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sergey Shtylyov [ Upstream commit ecff88e819e31081d41cd05bb199b9bd10e13e90 ] The driver neglects to check the result of platform_get_irq()'s call and blithely passes the negative error codes to request_irq() (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original error code. Stop calling request_irq() with the invalid IRQ #s. Fixes: 188db4435ac6 ("usb: gadget: s3c: use platform resources") Reviewed-by: Krzysztof Kozlowski Acked-by: Felipe Balbi Signed-off-by: Sergey Shtylyov Link: https://lore.kernel.org/r/bd69b22c-b484-5a1f-c798-78d4b78405f2@omp.ru Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/gadget/udc/s3c2410_udc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c index 179777cb699f..e3931da24277 100644 --- a/drivers/usb/gadget/udc/s3c2410_udc.c +++ b/drivers/usb/gadget/udc/s3c2410_udc.c @@ -1784,6 +1784,10 @@ static int s3c2410_udc_probe(struct platform_device *pdev) s3c2410_udc_reinit(udc); irq_usbd = platform_get_irq(pdev, 0); + if (irq_usbd < 0) { + retval = irq_usbd; + goto err_udc_clk; + } /* irq setup after old hardware state is cleaned up */ retval = request_irq(irq_usbd, s3c2410_udc_irq,