From patchwork Mon May 24 15:27:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 447907 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 C8E5BC47085 for ; Mon, 24 May 2021 16:00:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AB6C7613F5 for ; Mon, 24 May 2021 16:00:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235185AbhEXQCW (ORCPT ); Mon, 24 May 2021 12:02:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:46680 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235157AbhEXQA7 (ORCPT ); Mon, 24 May 2021 12:00:59 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8E88C61996; Mon, 24 May 2021 15:46:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621871190; bh=0DVwXL7PYrs3JfPmlESgZ3BmiRo0C+ub21RL2mKSP9Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BhQg0Btm4kEmybwQUjTIKckWrqbiVnD8W5F6To0UHV4znDdIpXu15aj7PY58F7Tyn KkXkHrdFhiCx//WfARdsWy71WjlJyS5vk+Zj4qnu6Ua48j6w75fa4qhnpcVlOD2edK q+VR0uXsnLIzRg+UmlzLzVXW5wHyVZf581QOsnHI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jacek Anaszewski , Phillip Potter Subject: [PATCH 5.12 115/127] leds: lp5523: check return value of lp5xx_read and jump to cleanup code Date: Mon, 24 May 2021 17:27:12 +0200 Message-Id: <20210524152338.751211928@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210524152334.857620285@linuxfoundation.org> References: <20210524152334.857620285@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Phillip Potter commit 6647f7a06eb030a2384ec71f0bb2e78854afabfe upstream. Check return value of lp5xx_read and if non-zero, jump to code at end of the function, causing lp5523_stop_all_engines to be executed before returning the error value up the call chain. This fixes the original commit (248b57015f35) which was reverted due to the University of Minnesota problems. Cc: stable Acked-by: Jacek Anaszewski Signed-off-by: Phillip Potter Link: https://lore.kernel.org/r/20210503115736.2104747-10-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman --- drivers/leds/leds-lp5523.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/leds/leds-lp5523.c +++ b/drivers/leds/leds-lp5523.c @@ -305,7 +305,9 @@ static int lp5523_init_program_engine(st /* Let the programs run for couple of ms and check the engine status */ usleep_range(3000, 6000); - lp55xx_read(chip, LP5523_REG_STATUS, &status); + ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); + if (ret) + goto out; status &= LP5523_ENG_STATUS_MASK; if (status != LP5523_ENG_STATUS_MASK) {