From patchwork Wed Apr 8 10:21:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hui Song X-Patchwork-Id: 1267858 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=nxp.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48y0zt32pNz9sSb for ; Wed, 8 Apr 2020 20:35:54 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728188AbgDHKfu (ORCPT ); Wed, 8 Apr 2020 06:35:50 -0400 Received: from inva020.nxp.com ([92.121.34.13]:43918 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726436AbgDHKfu (ORCPT ); Wed, 8 Apr 2020 06:35:50 -0400 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 248741A16DB; Wed, 8 Apr 2020 12:35:49 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 6BD031A0153; Wed, 8 Apr 2020 12:35:43 +0200 (CEST) Received: from titan.ap.freescale.net (titan.ap.freescale.net [10.192.208.233]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 3334C40285; Wed, 8 Apr 2020 18:35:36 +0800 (SGT) From: Hui Song To: Shawn Guo , Li Yang , Rob Herring , Mark Rutland , Linus Walleij , Bartosz Golaszewski Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, Song Hui Subject: [PATCH] gpio: mpc8xxx: Add shutdown function. Date: Wed, 8 Apr 2020 18:21:18 +0800 Message-Id: <20200408102118.17572-2-hui.song_1@nxp.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20200408102118.17572-1-hui.song_1@nxp.com> References: <20200408102118.17572-1-hui.song_1@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Song Hui The shutdown function needed to make interrupt handler to be NULL when kexec execute. Signed-off-by: Song Hui --- drivers/gpio/gpio-mpc8xxx.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c index 604dfec..a24e6c5 100644 --- a/drivers/gpio/gpio-mpc8xxx.c +++ b/drivers/gpio/gpio-mpc8xxx.c @@ -446,9 +446,21 @@ static int mpc8xxx_remove(struct platform_device *pdev) return 0; } +static int mpc8xxx_shutdown(struct platform_device *pdev) +{ + struct mpc8xxx_gpio_chip *mpc8xxx_gc = platform_get_drvdata(pdev); + + if (mpc8xxx_gc->irq) { + irq_set_chained_handler_and_data(mpc8xxx_gc->irqn, NULL, NULL); + irq_domain_remove(mpc8xxx_gc->irq); + } + + return 0; +} static struct platform_driver mpc8xxx_plat_driver = { .probe = mpc8xxx_probe, .remove = mpc8xxx_remove, + .shutdown = mpc8xxx_shutdown, .driver = { .name = "gpio-mpc8xxx", .of_match_table = mpc8xxx_gpio_ids,