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=-14.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 A01DFC433DF for ; Mon, 18 May 2020 18:02:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 75BB3208B8 for ; Mon, 18 May 2020 18:02:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589824936; bh=c7Z1TziP9EnCo4NzNnJO1mlONXL94kwHUnfD09/x5Gw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=fVS/77jiyNH1gbiz3csmYbuZXb3Zl37ynLT/4L8nozlw1J457fPQs3rvcWc0JTw5p NRxrpLZc5jtEEsToiqTH1V9W1Qjc1HjFGTa93hMAwfCEjaIPGTOc2R1JbnjgPZe5zB Y9sA8Kq5mfB8tvXzb3/fR9Ank6hKUhfrUGKs1ToE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732485AbgERSCO (ORCPT ); Mon, 18 May 2020 14:02:14 -0400 Received: from mail.kernel.org ([198.145.29.99]:45244 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731959AbgERSCH (ORCPT ); Mon, 18 May 2020 14:02:07 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9AFCC208B3; Mon, 18 May 2020 18:02:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589824927; bh=c7Z1TziP9EnCo4NzNnJO1mlONXL94kwHUnfD09/x5Gw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aK4HezU8jTV+z5bsAX4AMBE7aQpIHYfRjDWh2MHTTj8GHxL5XFwVQgjOVDggJAAdi oJq/+4+zVahCLabZJyAdVDt6T2wTIMR5rpS2Q6msIr7Fcdm9Yeqr34qosCvIh7Ry+N htGJWN+erdItqO48wz+LoByL+aVCbL5r7Q4VEI6Q= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kai Vehmanen , Takashi Iwai , Sasha Levin Subject: [PATCH 5.6 059/194] ALSA: hda/hdmi: fix race in monitor detection during probe Date: Mon, 18 May 2020 19:35:49 +0200 Message-Id: <20200518173536.649783489@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200518173531.455604187@linuxfoundation.org> References: <20200518173531.455604187@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kai Vehmanen [ Upstream commit ca76282b6faffc83601c25bd2a95f635c03503ef ] A race exists between build_pcms() and build_controls() phases of codec setup. Build_pcms() sets up notifier for jack events. If a monitor event is received before build_controls() is run, the initial jack state is lost and never reported via mixer controls. The problem can be hit at least with SOF as the controller driver. SOF calls snd_hda_codec_build_controls() in its workqueue-based probe and this can be delayed enough to hit the race condition. Fix the issue by invalidating the per-pin ELD information when build_controls() is called. The existing call to hdmi_present_sense() will update the ELD contents. This ensures initial monitor state is correctly reflected via mixer controls. BugLink: https://github.com/thesofproject/linux/issues/1687 Signed-off-by: Kai Vehmanen Link: https://lore.kernel.org/r/20200428123836.24512-1-kai.vehmanen@linux.intel.com Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/pci/hda/patch_hdmi.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 0c1a59d5ad59d..0f3250417b955 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2320,7 +2320,9 @@ static int generic_hdmi_build_controls(struct hda_codec *codec) for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) { struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx); + struct hdmi_eld *pin_eld = &per_pin->sink_eld; + pin_eld->eld_valid = false; hdmi_present_sense(per_pin, 0); } -- 2.20.1