From nobody Sun Feb 8 03:58:17 2026 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 E920CC001DC for ; Mon, 31 Jul 2023 16:59:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233819AbjGaQ7C (ORCPT ); Mon, 31 Jul 2023 12:59:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55340 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233526AbjGaQ6X (ORCPT ); Mon, 31 Jul 2023 12:58:23 -0400 Received: from mx0b-001ae601.pphosted.com (mx0a-001ae601.pphosted.com [67.231.149.25]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2AF881BCE for ; Mon, 31 Jul 2023 09:57:57 -0700 (PDT) Received: from pps.filterd (m0077473.ppops.net [127.0.0.1]) by mx0a-001ae601.pphosted.com (8.17.1.22/8.17.1.22) with ESMTP id 36V5lNJQ017071; Mon, 31 Jul 2023 11:57:38 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cirrus.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= PODMain02222019; bh=RHyGoQzk1u5genvtgwGtlQ8eSjyHd0Gs4TL3IEXqR+A=; b= U5vUnEnlzFelQxYvCphDPRU+MpWHHJHBUlJdiIZ2pV5SukOR1kJsHs7jFzettXd0 JSXzGjb69lZ1F4B8ry1mCQjUVDa1kOTJNYR/avSjGwbziEXkPxa3+Z8SHgJigucC WcMzCVjkINQ6bEYErJXVGoFgNLiNSfr4t2eUA5bC5meCxps3tXPGp7zjp0uAWhjX AdNvcJMxNu8UPe/cn7fKI9RAsywS0RNKIybfyytIq4xUFi5xtpkDYaCIilf7fKVj i8xknsPGQUF2p4CxxAsk9JRzTQHERSGvcJ72CqAV59TX3y682EPBqbYNL4/gKPPJ pZEHXXu/49KRpbEgZKvfWg== Received: from ediex01.ad.cirrus.com ([84.19.233.68]) by mx0a-001ae601.pphosted.com (PPS) with ESMTPS id 3s5gk1sg45-8 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 31 Jul 2023 11:57:38 -0500 (CDT) Received: from ediex01.ad.cirrus.com (198.61.84.80) by ediex01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.30; Mon, 31 Jul 2023 17:57:33 +0100 Received: from ediswmail.ad.cirrus.com (198.61.86.93) by ediex01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server id 15.2.1118.30 via Frontend Transport; Mon, 31 Jul 2023 17:57:33 +0100 Received: from EDIN4L06LR3.ad.cirrus.com (EDIN4L06LR3.ad.cirrus.com [198.61.64.107]) by ediswmail.ad.cirrus.com (Postfix) with ESMTP id 07796475; Mon, 31 Jul 2023 16:57:32 +0000 (UTC) From: Richard Fitzgerald To: CC: , , , , Richard Fitzgerald Subject: [PATCH 9/9] ALSA: hda/cs35l56: Reject I2C alias addresses Date: Mon, 31 Jul 2023 17:57:26 +0100 Message-ID: <20230731165726.7940-10-rf@opensource.cirrus.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230731165726.7940-1-rf@opensource.cirrus.com> References: <20230731165726.7940-1-rf@opensource.cirrus.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: aR0Fv-GAtzh-w4nrEOUP9pw2wCSgsztH X-Proofpoint-ORIG-GUID: aR0Fv-GAtzh-w4nrEOUP9pw2wCSgsztH X-Proofpoint-Spam-Reason: safe Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The ACPI nodes for CS35L56 can contain an extra I2CSerialBusV2 that is not a real device, it is an alias address. This alias address will not be in the cirrus,dev-index array, so reject any instantions with a device address not found in the array. Signed-off-by: Richard Fitzgerald --- sound/pci/hda/cs35l56_hda.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/sound/pci/hda/cs35l56_hda.c b/sound/pci/hda/cs35l56_hda.c index 004740509dbd..76b9c685560b 100644 --- a/sound/pci/hda/cs35l56_hda.c +++ b/sound/pci/hda/cs35l56_hda.c @@ -852,8 +852,12 @@ static int cs35l56_hda_read_acpi(struct cs35l56_hda *c= s35l56, int id) break; } } + /* + * It's not an error for the ID to be missing: for I2C there can be + * an alias address that is not a real device. So reject silently. + */ if (cs35l56->index =3D=3D -1) { - dev_err(cs35l56->base.dev, "No index found in %s\n", property); + dev_dbg(cs35l56->base.dev, "No index found in %s\n", property); ret =3D -ENODEV; goto err; } @@ -891,7 +895,8 @@ static int cs35l56_hda_read_acpi(struct cs35l56_hda *cs= 35l56, int id) return 0; =20 err: - dev_err(cs35l56->base.dev, "Failed property %s: %d\n", property, ret); + if (ret !=3D -ENODEV) + dev_err(cs35l56->base.dev, "Failed property %s: %d\n", property, ret); =20 return ret; } @@ -904,10 +909,8 @@ int cs35l56_hda_common_probe(struct cs35l56_hda *cs35l= 56, int id) dev_set_drvdata(cs35l56->base.dev, cs35l56); =20 ret =3D cs35l56_hda_read_acpi(cs35l56, id); - if (ret) { - dev_err_probe(cs35l56->base.dev, ret, "Platform not supported\n"); + if (ret) goto err; - } =20 cs35l56->amp_name =3D devm_kasprintf(cs35l56->base.dev, GFP_KERNEL, "AMP%= d", cs35l56->index + 1); --=20 2.30.2