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 C8E15C4167B for ; Tue, 5 Dec 2023 15:55:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346384AbjLEPzu (ORCPT ); Tue, 5 Dec 2023 10:55:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346919AbjLEPzq (ORCPT ); Tue, 5 Dec 2023 10:55:46 -0500 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 00EDDBA; Tue, 5 Dec 2023 07:55:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1701791753; x=1733327753; h=date:from:to:cc:subject:message-id:references: mime-version:content-transfer-encoding:in-reply-to; bh=cjRwytJeG5TG/a1uu/+8HD2/PFh3IJgfHgcnXENi5L4=; b=Zi/EE8zE7wIrMMRuoTqGM8QHnI520S3SS4Uobg8JvU69nvxkW/xovV8p MjBHoWmsmVFDwWkGzzyO4pKoBLDLd+FDoogxwsJ2UZAiAUOgmPnuWIakr Dzirc0MELP9gxe9r7oMFc7qnGFL+F9ncsqsI+uAdCE9AcTLFxpg/85YFd 4kIgso5mOGEUoFfAoe4C4f8u5Ru8DJmIftRLzYBbk2WAnNZfNo6VKFbHQ eAtfxCoiuGoQo4f1fJbedvC+7WD0aHXng5w0JWwwDoE7x4JRh5safvC98 Dkj7x1nHeY5M2nQbrYzdpjTLh3fikC2k9dnGDD8e/qwCsWXS7G+WI5hoj g==; X-IronPort-AV: E=McAfee;i="6600,9927,10915"; a="7259414" X-IronPort-AV: E=Sophos;i="6.04,252,1695711600"; d="scan'208";a="7259414" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Dec 2023 07:55:53 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10915"; a="861786429" X-IronPort-AV: E=Sophos;i="6.04,252,1695711600"; d="scan'208";a="861786429" Received: from smile.fi.intel.com ([10.237.72.54]) by FMSMGA003.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Dec 2023 07:55:49 -0800 Received: from andy by smile.fi.intel.com with local (Exim 4.97) (envelope-from ) id 1rAXly-000000024rT-06ck; Tue, 05 Dec 2023 17:55:46 +0200 Date: Tue, 5 Dec 2023 17:55:45 +0200 From: Andy Shevchenko To: Dawei Li Cc: Ilpo =?utf-8?Q?J=EF=BF=BDrvinen?= , Greg Kroah-Hartman , Jiri Slaby , jszhang@kernel.org, LKML , linux-serial , set_pte_at@outlook.com, stable@kernel.org Subject: Re: [PATCH] serial: dw8250: Make DLF feature independent of ADDITIONAL_FEATURE Message-ID: References: <20231204130820.2823688-1-dawei.li@shingroup.cn> <48f6fcce-4b5-a7c0-2fc0-989b9a2fba8@linux.intel.com> <6863B74199951BD2+ZW6DIO1n0phYBjg9@centos8> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <6863B74199951BD2+ZW6DIO1n0phYBjg9@centos8> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 05, 2023 at 09:55:44AM +0800, Dawei Li wrote: > On Mon, Dec 04, 2023 at 03:29:35PM +0200, Andy Shevchenko wrote: > > On Mon, Dec 04, 2023 at 03:20:09PM +0200, Ilpo Järvinen wrote: > > > On Mon, 4 Dec 2023, Dawei Li wrote: ... > > > The very same code change is already in tty-next (from another author). > > > > For your convenience: > > > > d804987153e7 ("serial: 8250_dw: Decouple DLF register check from UCV") > > [sigh] > > Apparently I thought tty/for-linus is the "bug fixing" branch for tty by > mistake, and didn't realize the same fix patch has been landed in tty-next > for a while. > > Thanks for the update. > > Anyway, I believe the fixing patch should cc stable and be getting backported? > I hit the bug on 5.10.x, it's possible the bug has been there before that. When that commit meets upstream you can always resend it for stable. The process is documented. -- With Best Regards, Andy Shevchenko