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=-16.0 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, URIBL_BLOCKED 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 8E9A9C433B4 for ; Thu, 29 Apr 2021 13:44:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 572526143A for ; Thu, 29 Apr 2021 13:44:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237362AbhD2Npm (ORCPT ); Thu, 29 Apr 2021 09:45:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:41630 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232867AbhD2Npl (ORCPT ); Thu, 29 Apr 2021 09:45:41 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 46E256143B; Thu, 29 Apr 2021 13:44:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1619703894; bh=ZmxwCdEQOCB2AI4UbnOTg2aXJP5A6X8yNRNktrFw0r0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=yDBYOhGDl43EBDMU0hY0mu7PRZUzu9I03gQVMCrtCnpYuxGTws3fWv3iI7mJyoP4C 9zu+tC2TORd9Nll0Ikpbp8nusyDcuX0d4tEYlF+cNr+DDJv03CRrWYqLGj+QZv8Hwk 8QKBS935qGIdhXeRl/ewDOKtLeYo1vJ5/3qlKgoo= Date: Thu, 29 Apr 2021 15:44:52 +0200 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Kangjie Lu , Jacek Anaszewski Subject: Re: [PATCH 6/7] Revert "leds: lp5523: fix a missing check of return value of lp55xx_read" Message-ID: References: <20210429130811.3353369-1-gregkh@linuxfoundation.org> <20210429130811.3353369-7-gregkh@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210429130811.3353369-7-gregkh@linuxfoundation.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Apr 29, 2021 at 03:08:10PM +0200, Greg Kroah-Hartman wrote: > This reverts commit 248b57015f35c94d4eae2fdd8c6febf5cd703900. > > Commits from @umn.edu addresses have been found to be submitted in "bad > faith" to try to test the kernel community's ability to review "known > malicious" changes. The result of these submissions can be found in a > paper submitted to the 42nd IEEE Symposium on Security and Privacy > entitled, "Open Source Insecurity: Stealthily Introducing > Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University > of Minnesota) and Kangjie Lu (University of Minnesota) but later > withdrawn. > > Because of this, all submissions from this group must be reverted from > the kernel tree and will need to be re-reviewed again to determine if > they actually are a valid fix. Until that work is complete, remove this > change to ensure that no problems are being introduced into the > codebase. > > Cc: Kangjie Lu > Cc: Jacek Anaszewski > Signed-off-by: Greg Kroah-Hartman > --- > drivers/leds/leds-lp5523.c | 4 +--- > 1 file changed, 1 insertion(+), 3 deletions(-) > > diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c > index fc433e63b1dc..5036d7d5f3d4 100644 > --- a/drivers/leds/leds-lp5523.c > +++ b/drivers/leds/leds-lp5523.c > @@ -305,9 +305,7 @@ static int lp5523_init_program_engine(struct lp55xx_chip *chip) > > /* Let the programs run for couple of ms and check the engine status */ > usleep_range(3000, 6000); > - ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); > - if (ret) > - return ret; > + lp55xx_read(chip, LP5523_REG_STATUS, &status); > status &= LP5523_ENG_STATUS_MASK; > > if (status != LP5523_ENG_STATUS_MASK) { > -- > 2.31.1 > This looks incorrect to me as lp5523_run_engine() has been called and not cleaned up from properly. I'll keep the revert and fix this up correctly. thanks, greg k-h