From patchwork Tue Feb 12 15:24:29 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gabriel FERNANDEZ X-Patchwork-Id: 10808185 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 125921575 for ; Tue, 12 Feb 2019 15:24:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0292E2BC7C for ; Tue, 12 Feb 2019 15:24:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EAAB12BCF6; Tue, 12 Feb 2019 15:24:58 +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 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 4E4892BCD8 for ; Tue, 12 Feb 2019 15:24:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727248AbfBLPY6 (ORCPT ); Tue, 12 Feb 2019 10:24:58 -0500 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:47061 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728273AbfBLPY5 (ORCPT ); Tue, 12 Feb 2019 10:24:57 -0500 Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx08-00178001.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x1CFGUq1031812; Tue, 12 Feb 2019 16:24:41 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2qjfy65jx9-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Tue, 12 Feb 2019 16:24:41 +0100 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 6020D34; Tue, 12 Feb 2019 15:24:40 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag4node2.st.com [10.75.127.11]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 3CA385459; Tue, 12 Feb 2019 15:24:40 +0000 (GMT) Received: from localhost (10.75.127.45) by SFHDAG4NODE2.st.com (10.75.127.11) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Tue, 12 Feb 2019 16:24:39 +0100 From: To: Michael Turquette , Stephen Boyd , Maxime Coquelin , Alexandre Torgue CC: , , , , Gabriel Fernandez Subject: [PATCH] Input: st-keyscan - fix potential zalloc NULL dereference Date: Tue, 12 Feb 2019 16:24:29 +0100 Message-ID: <20190212152429.1936-1-gabriel.fernandez@st.com> X-Mailer: git-send-email 2.17.0 MIME-Version: 1.0 X-Originating-IP: [10.75.127.45] X-ClientProxiedBy: SFHDAG5NODE1.st.com (10.75.127.13) To SFHDAG4NODE2.st.com (10.75.127.11) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-02-12_08:,, signatures=0 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Gabriel Fernandez This patch fixes the following static checker warning: drivers/input/keyboard/st-keyscan.c:156 keyscan_probe() error: potential zalloc NULL dereference: 'keypad_data->input_dev' Reported-by: Dan Carpenter Signed-off-by: Gabriel Fernandez --- drivers/input/keyboard/st-keyscan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/input/keyboard/st-keyscan.c b/drivers/input/keyboard/st-keyscan.c index babcfb165e4f..3b85631fde91 100644 --- a/drivers/input/keyboard/st-keyscan.c +++ b/drivers/input/keyboard/st-keyscan.c @@ -153,6 +153,8 @@ static int keyscan_probe(struct platform_device *pdev) input_dev->id.bustype = BUS_HOST; + keypad_data->input_dev = input_dev; + error = keypad_matrix_key_parse_dt(keypad_data); if (error) return error; @@ -168,8 +170,6 @@ static int keyscan_probe(struct platform_device *pdev) input_set_drvdata(input_dev, keypad_data); - keypad_data->input_dev = input_dev; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); keypad_data->base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(keypad_data->base))