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=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS 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 C3A3FC433DF for ; Tue, 25 Aug 2020 10:03:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 911BA2068F for ; Tue, 25 Aug 2020 10:03:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729710AbgHYKDA (ORCPT ); Tue, 25 Aug 2020 06:03:00 -0400 Received: from mx2.suse.de ([195.135.220.15]:60806 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729456AbgHYKC5 (ORCPT ); Tue, 25 Aug 2020 06:02:57 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 531D4AD2C; Tue, 25 Aug 2020 10:03:26 +0000 (UTC) Date: Tue, 25 Aug 2020 12:02:55 +0200 Message-ID: From: Takashi Iwai To: Tiezhu Yang Cc: Takashi Iwai , Jaroslav Kysela , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Xuefeng Li , Subject: Re: [PATCH v2] Revert "ALSA: hda: Add support for Loongson 7A1000 controller" In-Reply-To: <1598348388-2518-1-git-send-email-yangtiezhu@loongson.cn> References: <1598348388-2518-1-git-send-email-yangtiezhu@loongson.cn> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 Emacs/25.3 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 25 Aug 2020 11:39:48 +0200, Tiezhu Yang wrote: > > This reverts commit 61eee4a7fc40 ("ALSA: hda: Add support for Loongson > 7A1000 controller") to fix the following error on the Loongson LS7A > platform: > > rcu: INFO: rcu_preempt self-detected stall on CPU > > NMI backtrace for cpu 0 > CPU: 0 PID: 68 Comm: kworker/0:2 Not tainted 5.8.0+ #3 > Hardware name: , BIOS > Workqueue: events azx_probe_work [snd_hda_intel] > > Call Trace: > [] show_stack+0x9c/0x130 > [] dump_stack+0xb0/0xf0 > [] nmi_cpu_backtrace+0x134/0x140 > [] nmi_trigger_cpumask_backtrace+0x190/0x200 > [] rcu_dump_cpu_stacks+0x12c/0x190 > [] rcu_sched_clock_irq+0xa2c/0xfc8 > [] update_process_times+0x2c/0xb8 > [] tick_sched_timer+0x40/0xb8 > [] __hrtimer_run_queues+0x118/0x1d0 > [] hrtimer_interrupt+0x12c/0x2d8 > [] c0_compare_interrupt+0x74/0xa0 > [] __handle_irq_event_percpu+0xa8/0x198 > [] handle_irq_event_percpu+0x30/0x90 > [] handle_percpu_irq+0x88/0xb8 > [] generic_handle_irq+0x44/0x60 > [] do_IRQ+0x18/0x28 > [] plat_irq_dispatch+0x64/0x100 > [] handle_int+0x140/0x14c > [] irq_exit+0xf8/0x100 > > Because AZX_DRIVER_GENERIC can not work well for Loongson LS7A HDA > controller, it needs some workarounds which are not merged into the > upstream kernel at this time, so it should revert this patch now. > > Fixes: 61eee4a7fc40 ("ALSA: hda: Add support for Loongson 7A1000 controller") > Cc: # 5.9-rc1+ > Signed-off-by: Tiezhu Yang > --- > > v2: update commit message Applied now. Thanks. Takashi