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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 E2879C282D7 for ; Mon, 11 Feb 2019 15:54:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A841A21B18 for ; Mon, 11 Feb 2019 15:54:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549900475; bh=J8TlKC2fm/pZ1DhdlWDC3is4jsvDUHZ2PDa1IZnGZ7A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Un9GLYVefr6B3O4gPOYk0aAPXxdC+lZ/GjRbfe0zSQZkTx9tQlPKijBMiDrx3WAzc OsfNMdnBPqDJkWw/fBuTXzdStnHVDeHYC4WwAISFlU9XHjo6GErdWVff8AkxEMLbUo miYwEwoiA5tcbjuk8kc3dIDeo5IBjwMBD+urTaQM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731087AbfBKOfm (ORCPT ); Mon, 11 Feb 2019 09:35:42 -0500 Received: from mail.kernel.org ([198.145.29.99]:44444 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730650AbfBKOfm (ORCPT ); Mon, 11 Feb 2019 09:35:42 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.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 08DB720700; Mon, 11 Feb 2019 14:35:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549895741; bh=J8TlKC2fm/pZ1DhdlWDC3is4jsvDUHZ2PDa1IZnGZ7A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HtW53J41TWxDmRw4uHdFxoe7V+ySU+C1XWj2v+BRPBXgL48/tcmn6ROvet6H/1sQM PHc1/9t3gh8z2Xx4mftTL5lTow8L3aF7M9hVkJH/yA6qxgBujBJtbwc3sifFc7P/Ho EsfvXzGNs0nA6BYkNBgHuhyIs4EcCde6G8AFVi6M= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Aditya Pakki , Jiri Kosina , Sasha Levin Subject: [PATCH 4.20 280/352] HID: lenovo: Add checks to fix of_led_classdev_register Date: Mon, 11 Feb 2019 15:18:27 +0100 Message-Id: <20190211141904.771751638@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190211141846.543045703@linuxfoundation.org> References: <20190211141846.543045703@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 4.20-stable review patch. If anyone has any objections, please let me know. ------------------ [ 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