From patchwork Mon May 24 15:26:27 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: 446906 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, 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 DCD15C4709A for ; Mon, 24 May 2021 15:55:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C1EAE613F4 for ; Mon, 24 May 2021 15:55:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234452AbhEXP4n (ORCPT ); Mon, 24 May 2021 11:56:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:40492 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235148AbhEXPzz (ORCPT ); Mon, 24 May 2021 11:55:55 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3B5B761944; Mon, 24 May 2021 15:42:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621870948; bh=0DVwXL7PYrs3JfPmlESgZ3BmiRo0C+ub21RL2mKSP9Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=faKK4dE3xH0nzKENNG+o3wHwChrP3+dvq+1e1EzbJeRayWvn06zW/TMonU8rHlYei 2M7zgHijPB3Dlj3N9UiTxfX336WkHkQJ1xFLPrU55nOmsULvw+NkRB/BKQMpQK6ITA nAgFTpfA/T27gQT/daaTQJb4aON2NcBLmRLbhs1A= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jacek Anaszewski , Phillip Potter Subject: [PATCH 5.10 092/104] leds: lp5523: check return value of lp5xx_read and jump to cleanup code Date: Mon, 24 May 2021 17:26:27 +0200 Message-Id: <20210524152335.899552362@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210524152332.844251980@linuxfoundation.org> References: <20210524152332.844251980@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) {