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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, T_DKIMWL_WL_HIGH,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 F063DC004C9 for ; Tue, 7 May 2019 05:41:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B97D620578 for ; Tue, 7 May 2019 05:41:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557207700; bh=iEfU6ZPCt9MjIIlaMRwGa+rdr1IuXQoK3n05WICoS5E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=0+KV4k4iJst78oA8YMa9sAUWW6dKxBtdaBbcC+sIp10Pw3Ex1AV4sRRqvw51bazrZ 1HGKDpBfIXvxOP3BKdIS0hip3sFOFYXbk/pJ7h03h7ZdvesYZDkoUxGTjJOd78bZD3 LA7sMzfDjSej5L86pYlMwrReIiETitsmJgqV0owg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729401AbfEGFlj (ORCPT ); Tue, 7 May 2019 01:41:39 -0400 Received: from mail.kernel.org ([198.145.29.99]:32822 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729366AbfEGFlg (ORCPT ); Tue, 7 May 2019 01:41:36 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EB3C620675; Tue, 7 May 2019 05:41:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557207695; bh=iEfU6ZPCt9MjIIlaMRwGa+rdr1IuXQoK3n05WICoS5E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bRm3OC9tUGeJ9mj8IRiY7tkanxsy1Cl4lWhin6FmGLCppUoHmvcmjADZuLQzJCep/ QM1zGJjW1BHRVTr+t0JcpkgVO+A0+TyM5QJIWKztA0V5leCjvau1Lu06UF4IwXdvXh OzrZBsDHelROfhy+49kD2JWuQV3m4Zbl8JjOKVEQ= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anson Huang , Anson Huang , Dmitry Torokhov , Sasha Levin , linux-input@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 09/25] Input: snvs_pwrkey - initialize necessary driver data before enabling IRQ Date: Tue, 7 May 2019 01:41:06 -0400 Message-Id: <20190507054123.32514-9-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190507054123.32514-1-sashal@kernel.org> References: <20190507054123.32514-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Anson Huang [ Upstream commit bf2a7ca39fd3ab47ef71c621a7ee69d1813b1f97 ] SNVS IRQ is requested before necessary driver data initialized, if there is a pending IRQ during driver probe phase, kernel NULL pointer panic will occur in IRQ handler. To avoid such scenario, just initialize necessary driver data before enabling IRQ. This patch is inspired by NXP's internal kernel tree. Fixes: d3dc6e232215 ("input: keyboard: imx: add snvs power key driver") Signed-off-by: Anson Huang Signed-off-by: Dmitry Torokhov Signed-off-by: Sasha Levin --- drivers/input/keyboard/snvs_pwrkey.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/input/keyboard/snvs_pwrkey.c b/drivers/input/keyboard/snvs_pwrkey.c index 7544888c4749..b8dbde746b4e 100644 --- a/drivers/input/keyboard/snvs_pwrkey.c +++ b/drivers/input/keyboard/snvs_pwrkey.c @@ -156,6 +156,9 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev) return error; } + pdata->input = input; + platform_set_drvdata(pdev, pdata); + error = devm_request_irq(&pdev->dev, pdata->irq, imx_snvs_pwrkey_interrupt, 0, pdev->name, pdev); @@ -171,9 +174,6 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev) return error; } - pdata->input = input; - platform_set_drvdata(pdev, pdata); - device_init_wakeup(&pdev->dev, pdata->wakeup); return 0; -- 2.20.1