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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,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 44A0CC282C8 for ; Mon, 28 Jan 2019 15:58:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 13C1821848 for ; Mon, 28 Jan 2019 15:58:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548691123; bh=aHTiA+VvQMHT5liIyiq5RQlij9mEPbBTiOUj6/+qoRI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=gJCltH+suJZZZrDrWSPkoJlsz4XopzsPrLt3f7bKMD/4uii8H5XeYYixZRBnBp4lx BLH/kP2PqgVfgBWWhOUAnGC4+IJdAE+D2+yEtuTumal4SQTKHyaPymJBEgcTXAF83v T+xeWeJqLcx3t7Ex4C6+UC2Ab9uoU9LsuwEXD8/Q= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730464AbfA1P6l (ORCPT ); Mon, 28 Jan 2019 10:58:41 -0500 Received: from mail.kernel.org ([198.145.29.99]:44032 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730441AbfA1P6g (ORCPT ); Mon, 28 Jan 2019 10:58:36 -0500 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 969F621852; Mon, 28 Jan 2019 15:58:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548691116; bh=aHTiA+VvQMHT5liIyiq5RQlij9mEPbBTiOUj6/+qoRI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=exev28277203aZ0JjNg7moO+A/LKEazrfz1++ZU3P+HMgpTYJlvXx8eLzqKEXS3Mn Q4hbZgnvlpTb2OkO5FtZlX/QVCGNvATvBL0sawCMtCWijXgm+GW4Ki7jiQkmvig3e1 fAEzTWuyDW7AcgogblDjou7LrNIH0uoyozhn20TM= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Aditya Pakki , Jiri Kosina , Sasha Levin , linux-input@vger.kernel.org Subject: [PATCH AUTOSEL 4.20 294/304] HID: lenovo: Add checks to fix of_led_classdev_register Date: Mon, 28 Jan 2019 10:43:31 -0500 Message-Id: <20190128154341.47195-294-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190128154341.47195-1-sashal@kernel.org> References: <20190128154341.47195-1-sashal@kernel.org> MIME-Version: 1.0 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: Aditya Pakki [ Upstream commit 6ae16dfb61bce538d48b7fe98160fada446056c5 ] In lenovo_probe_tpkbd(), the function of_led_classdev_register() could return an error value that is unchecked. The fix adds these checks. Signed-off-by: Aditya Pakki Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin --- drivers/hid/hid-lenovo.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c index 643b6eb54442..eacc76d2ab96 100644 --- a/drivers/hid/hid-lenovo.c +++ b/drivers/hid/hid-lenovo.c @@ -743,7 +743,9 @@ static int lenovo_probe_tpkbd(struct hid_device *hdev) data_pointer->led_mute.brightness_get = lenovo_led_brightness_get_tpkbd; data_pointer->led_mute.brightness_set = lenovo_led_brightness_set_tpkbd; data_pointer->led_mute.dev = dev; - led_classdev_register(dev, &data_pointer->led_mute); + ret = led_classdev_register(dev, &data_pointer->led_mute); + if (ret < 0) + goto err; data_pointer->led_micmute.name = name_micmute; data_pointer->led_micmute.brightness_get = @@ -751,7 +753,11 @@ static int lenovo_probe_tpkbd(struct hid_device *hdev) data_pointer->led_micmute.brightness_set = lenovo_led_brightness_set_tpkbd; data_pointer->led_micmute.dev = dev; - led_classdev_register(dev, &data_pointer->led_micmute); + ret = led_classdev_register(dev, &data_pointer->led_micmute); + if (ret < 0) { + led_classdev_unregister(&data_pointer->led_mute); + goto err; + } lenovo_features_set_tpkbd(hdev); -- 2.19.1