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=-5.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, T_DKIMWL_WL_HIGH,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 143E5C04A6B for ; Mon, 6 May 2019 14:50:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D2B642053B for ; Mon, 6 May 2019 14:50:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557154237; bh=hNMILTvkYrpnJHXR3XQLza2zTz1EDv6P8yTCQHmpAkw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=FbCMkaBbZlfZFZ26L0mfzjT8/u9ftVkbhH7cCp913Qpoo30qI1jW8xfNhqoOJ/hZP hA//ZtrJXN5iuu3ZaWDXomjNDRr1nenRnBtxHhMMnMnN5RnqWxr+05sgthyeWVtGMW BEWVEVEV6BRwmmYlJnWHK0x1vL7IJ2a87OZphkiw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729176AbfEFOub (ORCPT ); Mon, 6 May 2019 10:50:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:50762 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729560AbfEFOtU (ORCPT ); Mon, 6 May 2019 10:49:20 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 52EBF20C01; Mon, 6 May 2019 14:49:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557154159; bh=hNMILTvkYrpnJHXR3XQLza2zTz1EDv6P8yTCQHmpAkw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vSAy3gXkS5S7z4M80/12lowEW3JGKh1rqXSCIKHcVsTAToW5JBEdxHa9eJhS6Tyj/ TAL6QWQIKt5bpQrb3mOe/FI869h79VT15a5TEOJGEIyER2u6dc2BFZB4gZEx2b0ZiI BwMnoLPUzXAR4CGKINi5RC3lAm4HK0n+zfB2RmD4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Anson Huang , Dmitry Torokhov Subject: [PATCH 4.9 59/62] Input: snvs_pwrkey - initialize necessary driver data before enabling IRQ Date: Mon, 6 May 2019 16:33:30 +0200 Message-Id: <20190506143056.523415973@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190506143051.102535767@linuxfoundation.org> References: <20190506143051.102535767@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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 commit bf2a7ca39fd3ab47ef71c621a7ee69d1813b1f97 upstream. 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: Greg Kroah-Hartman --- drivers/input/keyboard/snvs_pwrkey.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- 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 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 return error; } - pdata->input = input; - platform_set_drvdata(pdev, pdata); - device_init_wakeup(&pdev->dev, pdata->wakeup); return 0;