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=-4.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no 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 8EE4DC433E0 for ; Tue, 2 Jun 2020 14:01:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5A6CF2074B for ; Tue, 2 Jun 2020 14:01:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591106489; bh=QuaLTejg1IfE7nDnsO56NeBDKKncmnpeRkbGrce8NqI=; h=From:To:Cc:Subject:Date:List-ID:From; b=vsoyI76F3+8J6FCWxcdRlgJV6qdZIucsI4/ScOve3JitDdLoGSkMdEqRNKINmHPa3 jtyJX2I78ru7VbyNu0GujCQ9aKoQSgmRnFyCEQNNW1x1g2v2U7kETb65NyH4wiGVgN cMIwBHeRsa5W904pjNjGLUF2lY8I1nITfOlSqvfY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726112AbgFBOB3 (ORCPT ); Tue, 2 Jun 2020 10:01:29 -0400 Received: from mail-lj1-f195.google.com ([209.85.208.195]:45320 "EHLO mail-lj1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725841AbgFBOB2 (ORCPT ); Tue, 2 Jun 2020 10:01:28 -0400 Received: by mail-lj1-f195.google.com with SMTP id z18so12674895lji.12; Tue, 02 Jun 2020 07:01:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=2GWIfNtzCugpdmUqQsZRd/8mo4Bw27Ep9qZG/S6V/g8=; b=fdViPSblwRo3UhJL0C2d5x+BwIMt04XqTSU4EKCjbRcvCJXGEzyXgcjdJBi7s9rOcg f0iIiWkkaxIKL+M6yPFZ4lTVBKHBfprM4jNyE4I9hxMAYCnHFoFWj7UW3+LOat3T4ejM OQCw6CuzZkFKZVI156itfwJL6crrIDrZM03ekgBgEtjBqbOCS5RzR3QxzT7XtK1BaEJp HynU9/XAORVCFl5nqYVe7r/zUkwAWdnx5gOID1YKK22WCNsUAIyIsyORV486SDHk6hik YAzhCw5OvneeMlVGHVtVPKnqqtmasNGR2qx4e42Lvr4e+MB3Wq6dodgZo6lhGqKPrY0R oaAw== X-Gm-Message-State: AOAM531xZbCkDVuI2RSit5ERxgmaGIUtAsLi3wCI2BrjG6xM2U9B7WFQ UAhBNOoCaKCrRR4Pq3Qird0= X-Google-Smtp-Source: ABdhPJymTQM9Ny8rhRuuLH44YpMh03Mgg2hLv4ixzkGnxZxqRZqkzo7nc8Hdq3RuC9Y+E8yN45TrGg== X-Received: by 2002:a2e:1453:: with SMTP id 19mr4084338lju.155.1591106486007; Tue, 02 Jun 2020 07:01:26 -0700 (PDT) Received: from xi.terra (c-beaee455.07-184-6d6c6d4.bbcust.telenor.se. [85.228.174.190]) by smtp.gmail.com with ESMTPSA id x23sm720423lfe.32.2020.06.02.07.01.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Jun 2020 07:01:25 -0700 (PDT) Received: from johan by xi.terra with local (Exim 4.93.0.4) (envelope-from ) id 1jg7Ti-0000xq-LH; Tue, 02 Jun 2020 16:01:18 +0200 From: Johan Hovold To: Greg Kroah-Hartman Cc: Jiri Slaby , Dmitry Safonov <0x7f454c46@gmail.com>, Andy Shevchenko , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 0/4] serial: core: fix up sysrq regressions Date: Tue, 2 Jun 2020 16:00:54 +0200 Message-Id: <20200602140058.3656-1-johan@kernel.org> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-serial-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org This series fixes a few regressions introduced by the recent sysrq rework that went into 5.6. The port unlock fix is tagged for stable, and the fix for the unnecessary per-character overhead probably could be as well although it is a bit more intrusive. Johan Johan Hovold (4): Revert "serial: core: Refactor uart_unlock_and_check_sysrq()" serial: core: fix broken sysrq port unlock serial: core: fix sysrq overhead regression serial: core: drop redundant sysrq checks drivers/tty/serial/serial_core.c | 96 +--------------------------- include/linux/serial_core.h | 105 +++++++++++++++++++++++++++++-- 2 files changed, 103 insertions(+), 98 deletions(-) -- 2.26.2