From patchwork Tue Aug 8 04:25:34 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 9886549 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id BD0FB60384 for ; Tue, 8 Aug 2017 05:11:55 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A9F2B2875E for ; Tue, 8 Aug 2017 05:11:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9C0332877C; Tue, 8 Aug 2017 05:11:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 31E882875E for ; Tue, 8 Aug 2017 05:11:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750818AbdHHFLx (ORCPT ); Tue, 8 Aug 2017 01:11:53 -0400 Received: from gateway20.websitewelcome.com ([192.185.49.40]:13950 "EHLO gateway20.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750770AbdHHFLx (ORCPT ); Tue, 8 Aug 2017 01:11:53 -0400 X-Greylist: delayed 1500 seconds by postgrey-1.27 at vger.kernel.org; Tue, 08 Aug 2017 01:11:53 EDT Received: from cm14.websitewelcome.com (cm14.websitewelcome.com [100.42.49.7]) by gateway20.websitewelcome.com (Postfix) with ESMTP id C4B49400E3801 for ; Mon, 7 Aug 2017 23:25:35 -0500 (CDT) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id ew4ldE03RyM9yew4ld2pFQ; Mon, 07 Aug 2017 23:25:03 -0500 Received: from [187.192.74.87] (port=36590 helo=embeddedgus) by gator4166.hostgator.com with esmtpa (Exim 4.87) (envelope-from ) id 1dew5H-004LrH-FH; Mon, 07 Aug 2017 23:25:35 -0500 Date: Mon, 7 Aug 2017 23:25:34 -0500 From: "Gustavo A. R. Silva" To: Felipe Balbi , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH] usb: dwc3: omap: fix error return code in dwc3_omap_probe() Message-ID: <20170808042534.GA8103@embeddedgus> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 187.192.74.87 X-Exim-ID: 1dew5H-004LrH-FH X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedgus) [187.192.74.87]:36590 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 7 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP platform_get_irq() returns an error code, but the dwc3-omap driver ignores it and always returns -EINVAL. This is not correct and, prevents -EPROBE_DEFER from being propagated properly. Notice that platform_get_irq() no longer returns 0 on error: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e330b9a6bb35dc7097a4f02cb1ae7b6f96df92af Print and propagate the return value of platform_get_irq on failure. This issue was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva --- drivers/usb/dwc3/dwc3-omap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index f5aaa0c..3530795 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -478,8 +478,8 @@ static int dwc3_omap_probe(struct platform_device *pdev) irq = platform_get_irq(pdev, 0); if (irq < 0) { - dev_err(dev, "missing IRQ resource\n"); - return -EINVAL; + dev_err(dev, "missing IRQ resource: %d\n", irq); + return irq; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0);