From nobody Fri Dec 19 06:31:11 2025 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 9072FCA5537 for ; Wed, 13 Sep 2023 16:03:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229511AbjIMQDH (ORCPT ); Wed, 13 Sep 2023 12:03:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52678 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229804AbjIMQDE (ORCPT ); Wed, 13 Sep 2023 12:03:04 -0400 Received: from mx0b-001ae601.pphosted.com (mx0a-001ae601.pphosted.com [67.231.149.25]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 107C792 for ; Wed, 13 Sep 2023 09:03:00 -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 38DFQNmf015064; Wed, 13 Sep 2023 11:02:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cirrus.com; h= from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding:content-type; s=PODMain02222019; bh=4 dxWaJPvr2QnmomnbN1/XJKlzqqGpJ4ZCyl1FkfwbuU=; b=erKjCEdlTFErWs6yb /6S5kNShx40qWneHewW/2h5stjBXxq2lL9yJNGgmlmIryCpOKXZqhfuG/zQueSjU ZyoaIcmixgPDBa1EENn1dqZAmnFNkIbV/CCrQqqIQ1ZJUwHFhTAyPeNE54ks2ios tghEtHGb0Z3wPQWWcu+b9M2pJ4JiSRhe/dfqNW4QEM0mbiCJGxXxNs4YapYjjB/A r00svrhucWYpBKOLYhdXMZOJ8VdW7cBn/j0GiTvRycpZ5gXJZA7YF5mAYoxhTNyp gzkdsI2hf+d9cOdDzktRbCfqIZYL7xnIO8L93vdSb7DjwDWEC/eOhXherWvzHo2A yJNcg== Received: from ediex02.ad.cirrus.com ([84.19.233.68]) by mx0a-001ae601.pphosted.com (PPS) with ESMTPS id 3t2y7u155j-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 13 Sep 2023 11:02:52 -0500 (CDT) Received: from ediex02.ad.cirrus.com (198.61.84.81) by ediex02.ad.cirrus.com (198.61.84.81) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.37; Wed, 13 Sep 2023 17:02:50 +0100 Received: from ediswmail.ad.cirrus.com (198.61.86.93) by anon-ediex02.ad.cirrus.com (198.61.84.81) with Microsoft SMTP Server id 15.2.1118.37 via Frontend Transport; Wed, 13 Sep 2023 17:02:50 +0100 Received: from edi-sw-dsktp-006.ad.cirrus.com (edi-sw-dsktp-006.ad.cirrus.com [198.90.251.125]) by ediswmail.ad.cirrus.com (Postfix) with ESMTP id 393F915B9; Wed, 13 Sep 2023 16:02:50 +0000 (UTC) From: Richard Fitzgerald To: CC: , , , Richard Fitzgerald Subject: [PATCH] ASoC: wm_adsp: Fix missing locking in wm_adsp_[read|write]_ctl() Date: Wed, 13 Sep 2023 17:02:50 +0100 Message-ID: <20230913160250.3700346-1-rf@opensource.cirrus.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: Zy09iuh4OJHrYMobOncWbEkyA3PD04ba X-Proofpoint-ORIG-GUID: Zy09iuh4OJHrYMobOncWbEkyA3PD04ba X-Proofpoint-Spam-Reason: safe Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" wm_adsp_read_ctl() and wm_adsp_write_ctl() must hold the cs_dsp pwr_lock mutex when calling cs_dsp_coeff_read_ctrl() and cs_dsp_coeff_write_ctrl(). Signed-off-by: Richard Fitzgerald --- These functions aren't currently used so this fix doesn't need to be backported. --- sound/soc/codecs/wm_adsp.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 6fc34f41b175..d1b9238d391e 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -687,7 +687,10 @@ int wm_adsp_write_ctl(struct wm_adsp *dsp, const char = *name, int type, struct wm_coeff_ctl *ctl; int ret; =20 + mutex_lock(&dsp->cs_dsp.pwr_lock); ret =3D cs_dsp_coeff_write_ctrl(cs_ctl, 0, buf, len); + mutex_unlock(&dsp->cs_dsp.pwr_lock); + if (ret < 0) return ret; =20 @@ -703,8 +706,14 @@ EXPORT_SYMBOL_GPL(wm_adsp_write_ctl); int wm_adsp_read_ctl(struct wm_adsp *dsp, const char *name, int type, unsigned int alg, void *buf, size_t len) { - return cs_dsp_coeff_read_ctrl(cs_dsp_get_ctl(&dsp->cs_dsp, name, type, al= g), - 0, buf, len); + int ret; + + mutex_lock(&dsp->cs_dsp.pwr_lock); + ret =3D cs_dsp_coeff_read_ctrl(cs_dsp_get_ctl(&dsp->cs_dsp, name, type, a= lg), + 0, buf, len); + mutex_unlock(&dsp->cs_dsp.pwr_lock); + + return ret; } EXPORT_SYMBOL_GPL(wm_adsp_read_ctl); =20 --=20 2.30.2