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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3966CC433EF for ; Sat, 19 Feb 2022 09:52:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235283AbiBSJw0 (ORCPT ); Sat, 19 Feb 2022 04:52:26 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:34498 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233937AbiBSJwZ (ORCPT ); Sat, 19 Feb 2022 04:52:25 -0500 Received: from mxout04.lancloud.ru (mxout04.lancloud.ru [45.84.86.114]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2DD2B692A7 for ; Sat, 19 Feb 2022 01:52:05 -0800 (PST) Received: from LanCloud DKIM-Filter: OpenDKIM Filter v2.11.0 mxout04.lancloud.ru C3BFC20C601B Received: from LanCloud Received: from LanCloud Received: from LanCloud From: Sergey Shtylyov Subject: Re: [PATCH] ata: libata-sff: fix reading uninitialized variable in ata_sff_lost_interrupt() To: Damien Le Moal , CC: Dan Carpenter References: <5e02673b-57d2-40b1-ceba-55abfb251089@omp.ru> Organization: Open Mobile Platform Message-ID: Date: Sat, 19 Feb 2022 12:52:01 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [192.168.11.198] X-ClientProxiedBy: LFEXT01.lancloud.ru (fd00:f066::141) To LFEX1907.lancloud.ru (fd00:f066::207) Precedence: bulk List-ID: X-Mailing-List: linux-ide@vger.kernel.org On 2/19/22 5:39 AM, Damien Le Moal wrote: >> Due to my sloppy coding in commit 2c75a451ecb0 ("ata: libata-sff: refactor >> ata_sff_altstatus()"), in ata_sff_lost_interrupt() iff the device control >> register doesn't exists, ata_port_warn() would print the 'status' variable >> which never gets assigned. Restore the original order of the statements, >> wrapping the ata_sff_altstatus() call in WARN_ON_ONCE()... >> >> While at it, fix crazy indentation in the ata_port_warn() call itself... >> >> Fixes: 2c75a451ecb0 ("ata: libata-sff: refactor ata_sff_altstatus()") >> Reported-by: kernel test robot >> Reported-by: Dan Carpenter >> Signed-off-by: Sergey Shtylyov > > I squashed this in the commit being fixed. I'm seeing a few typos/errors in the updated patch #2: > In ata_sff_lost_interrupt(), wrap the ata_sff_altstatus() call in a s/a/the/? > WARN_ON_ONCE() + check? > to issue a warning if the if the device control registert Register? :-) > does not exist. And while at it, fix crazy indentation in the > ata_port_warn() call itself... Not clear why you (we?) emphasize this by using "itself"... Well, if you choose to fix those, I'll be thnakful. But you may as well ignore me. :-) [...] MBR, Sergey