From patchwork Fri May 1 13:22:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 226582 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=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 660C6C47254 for ; Fri, 1 May 2020 13:48:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4630020757 for ; Fri, 1 May 2020 13:48:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588340914; bh=ZOWlDXJ+y14rAyA1g+BeULgdahx3vf6rhu7aIbrlV4Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=2SXtmax7A2r6RDXfXlH6Zsf7ugmnEdQhpBH+8q8uJbwv1PqULxt0oO60cLiDOByPK kj0x8jfhVW8O4L22B1hgAQD+sVuDG8s/c9V1KGQel04/mNROamZthTpPAQM90OD1Gz oONNMoCTw1oYom93sDXOat/EzN7PBKk1HqN3d75I= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731493AbgEANmQ (ORCPT ); Fri, 1 May 2020 09:42:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:42788 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731304AbgEANmP (ORCPT ); Fri, 1 May 2020 09:42:15 -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 83070208DB; Fri, 1 May 2020 13:42:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588340534; bh=ZOWlDXJ+y14rAyA1g+BeULgdahx3vf6rhu7aIbrlV4Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LXljtFg9EO6eELZPc3/27IYdpG3ja9fpGMY0NuSnshveTPW8eNeQdBUMXVoMlpeii MJew5p4ZPeUAyslPFrEnIQnmig3nSUZzCkrImvgiJCfojxW+MAy95M/FootKlIjuqq CN02GVLPzD8KOKFtdiPqyx/eo3D1q5OoZMamcZEU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jerome Brunet , Mark Brown Subject: [PATCH 5.6 021/106] ASoC: meson: axg-card: fix codec-to-codec link setup Date: Fri, 1 May 2020 15:22:54 +0200 Message-Id: <20200501131546.647879294@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200501131543.421333643@linuxfoundation.org> References: <20200501131543.421333643@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jerome Brunet commit 1164284270779e1865cc2046a2a01b58a1e858a9 upstream. Since the addition of commit 9b5db059366a ("ASoC: soc-pcm: dpcm: Only allow playback/capture if supported"), meson-axg cards which have codec-to-codec links fail to init and Oops: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000128 Internal error: Oops: 96000044 [#1] PREEMPT SMP CPU: 3 PID: 1582 Comm: arecord Not tainted 5.7.0-rc1 pc : invalidate_paths_ep+0x30/0xe0 lr : snd_soc_dapm_dai_get_connected_widgets+0x170/0x1a8 Call trace: invalidate_paths_ep+0x30/0xe0 snd_soc_dapm_dai_get_connected_widgets+0x170/0x1a8 dpcm_path_get+0x38/0xd0 dpcm_fe_dai_open+0x70/0x920 snd_pcm_open_substream+0x564/0x840 snd_pcm_open+0xfc/0x228 snd_pcm_capture_open+0x4c/0x78 snd_open+0xac/0x1a8 ... While initiliazing the links, ASoC treats the codec-to-codec links of this card type as a DPCM backend. This error eventually leads to the Oops. Most of the card driver code is shared between DPCM backends and codec-to-codec links. The property "no_pcm" marking DCPM BE was left set on codec-to-codec links, leading to this problem. This commit fixes that. Fixes: 0a8f1117a680 ("ASoC: meson: axg-card: add basic codec-to-codec link support") Signed-off-by: Jerome Brunet Link: https://lore.kernel.org/r/20200420114511.450560-2-jbrunet@baylibre.com Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- sound/soc/meson/axg-card.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/sound/soc/meson/axg-card.c +++ b/sound/soc/meson/axg-card.c @@ -586,8 +586,10 @@ static int axg_card_add_link(struct snd_ if (axg_card_cpu_is_tdm_iface(dai_link->cpus->of_node)) ret = axg_card_parse_tdm(card, np, index); - else if (axg_card_cpu_is_codec(dai_link->cpus->of_node)) + else if (axg_card_cpu_is_codec(dai_link->cpus->of_node)) { dai_link->params = &codec_params; + dai_link->no_pcm = 0; /* link is not a DPCM BE */ + } return ret; }