From patchwork Thu Aug 30 01:16:40 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunfeng Yun X-Patchwork-Id: 10581103 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id ADD6F17DB for ; Thu, 30 Aug 2018 01:17:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8DA332AE39 for ; Thu, 30 Aug 2018 01:17:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7D3E12B8BA; Thu, 30 Aug 2018 01:17:08 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY 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 3C8022AE39 for ; Thu, 30 Aug 2018 01:17:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726169AbeH3FQf (ORCPT ); Thu, 30 Aug 2018 01:16:35 -0400 Received: from mailgw02.mediatek.com ([1.203.163.81]:56925 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1725758AbeH3FQf (ORCPT ); Thu, 30 Aug 2018 01:16:35 -0400 X-UUID: a0752fedbccd446abdd489ff7adb1b67-20180830 Received: from mtkcas35.mediatek.inc [(172.27.4.250)] by mailgw02.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 1162640858; Thu, 30 Aug 2018 09:16:53 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by MTKMBS31N1.mediatek.inc (172.27.4.69) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Thu, 30 Aug 2018 09:16:52 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1210.3 via Frontend Transport; Thu, 30 Aug 2018 09:16:51 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman , Felipe Balbi CC: Martin Blumenstingl , Matthias Brugger , Johan Hovold , Chunfeng Yun , , , , , Subject: [PATCH v3] usb: core: phy: fix return value checking about devm_of_phy_get_by_index() Date: Thu, 30 Aug 2018 09:16:40 +0800 Message-ID: <626cea85395e3a1f002ef0a241bb508d770a33c0.1535536218.git.chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-MTK: N Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Use IS_ERR() instead of IS_ERR_OR_NULL() because devm_of_phy_get_by_index() never return NULL value; But still need ignore the error of -ENODEV, for more information, please refer to: [0] https://lkml.org/lkml/2018/4/19/88 [1] https://patchwork.kernel.org/patch/10160181/ Signed-off-by: Chunfeng Yun Reviewed-by: Johan Hovold --- V3: abandon the ternary operator suggested by Johan V2: keep the -ENODEV check --- drivers/usb/core/phy.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/usb/core/phy.c b/drivers/usb/core/phy.c index 9879767..38b2c77 100644 --- a/drivers/usb/core/phy.c +++ b/drivers/usb/core/phy.c @@ -23,10 +23,11 @@ static int usb_phy_roothub_add_phy(struct device *dev, int index, struct list_head *list) { struct usb_phy_roothub *roothub_entry; - struct phy *phy = devm_of_phy_get_by_index(dev, dev->of_node, index); + struct phy *phy; - if (IS_ERR_OR_NULL(phy)) { - if (!phy || PTR_ERR(phy) == -ENODEV) + phy = devm_of_phy_get_by_index(dev, dev->of_node, index); + if (IS_ERR(phy)) { + if (PTR_ERR(phy) == -ENODEV) return 0; else return PTR_ERR(phy);