From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 45A3FC43441 for ; Wed, 21 Nov 2018 18:13:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1717C214D9 for ; Wed, 21 Nov 2018 18:13:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1717C214D9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=osadl.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731342AbeKVEs7 (ORCPT ); Wed, 21 Nov 2018 23:48:59 -0500 Received: from www.osadl.org ([62.245.132.105]:36197 "EHLO www.osadl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730877AbeKVEs7 (ORCPT ); Wed, 21 Nov 2018 23:48:59 -0500 Received: from debian01.hofrr.at (178.115.242.59.static.drei.at [178.115.242.59]) by www.osadl.org (8.13.8/8.13.8/OSADL-2007092901) with ESMTP id wALI9BFN006464; Wed, 21 Nov 2018 19:09:16 +0100 From: Nicholas Mc Guire To: Linus Walleij Cc: Bartosz Golaszewski , Matthias Brugger , Sergio Paracuellos , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Nicholas Mc Guire Subject: [PATCH 2/2] gpio: mt7621: pass mediatek_gpio_bank_probe() failure up the stack Date: Wed, 21 Nov 2018 19:06:13 +0100 Message-Id: <1542823573-20228-2-git-send-email-hofrat@osadl.org> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1542823573-20228-1-git-send-email-hofrat@osadl.org> References: <1542823573-20228-1-git-send-email-hofrat@osadl.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The error cases of mediatek_gpio_bank_probe() would go unnoticed (except for the dev_err() messages). The probe function should return an error if one of the banks failed to initialize properly. Signed-off-by: Nicholas Mc Guire Fixes: 4ba9c3afda41 ("gpio: mt7621: Add a driver for MT7621") --- Patch was compile tested with: omega2p_defconfig, SOC_MT7621=y, GPIOLIB=y, GPIO_MT7621=y Patch is against 4.20-rc3 (localversion-next is next-20181121) drivers/gpio/gpio-mt7621.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/gpio-mt7621.c b/drivers/gpio/gpio-mt7621.c index 1ec95bc..68fca8b 100644 --- a/drivers/gpio/gpio-mt7621.c +++ b/drivers/gpio/gpio-mt7621.c @@ -297,6 +297,7 @@ mediatek_gpio_probe(struct platform_device *pdev) struct device_node *np = dev->of_node; struct mtk *mtk; int i; + int ret; mtk = devm_kzalloc(dev, sizeof(*mtk), GFP_KERNEL); if (!mtk) @@ -311,8 +312,11 @@ mediatek_gpio_probe(struct platform_device *pdev) platform_set_drvdata(pdev, mtk); mediatek_gpio_irq_chip.name = dev_name(dev); - for (i = 0; i < MTK_BANK_CNT; i++) - mediatek_gpio_bank_probe(dev, np, i); + for (i = 0; i < MTK_BANK_CNT; i++) { + ret = mediatek_gpio_bank_probe(dev, np, i); + if (!ret) + return ret; + } return 0; } -- 2.1.4