From patchwork Tue Oct 15 21:29:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 835717 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0A7A920E025; Tue, 15 Oct 2024 21:30:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729027810; cv=none; b=DlEeB1PavzjyIw1THleOOnKxWyDd6LpqZBZjHwQ3bjVMlaRD/8E0n0vE09KSTepiCpW11dkBOVZyIEQtstRxX2ZGYMq2IkKZARdxhw3yRHMXOK6q42sgCLwTbQY2qNYRJ8PzxzcAatUlkVapEH1cawmrwKIxvkQQK3bsu8rAt9Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729027810; c=relaxed/simple; bh=FR9PmxE0JAUHAbSo/6eRx3/E2dbLe7y5jqh5CAoVB8E=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=T0tnJzS63h3IJZMvyEcbBzN/i8FZZa8YUVUv0szdGrpmZOiAEDeSiwTC3t7PCVKxMpN5DfSdRi9D/EHSyGDzRy+Wdh4+fwerZiHk//DdSew7lMlVd0IpI0nsZp5pjwxa6rEWo8xtHwBhzxX6IqyiIFBt7b/VvqhTkq8o/l8dbyc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=Ytkilg2o; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="Ytkilg2o" Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49FIl7ga004057; Tue, 15 Oct 2024 21:29:39 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= jTuiy++G5lj8Z8ZK0GNyWB7rsUZGqX20ze7CZlBIUn0=; b=Ytkilg2ooSGRgcTr bmgX8Xo37cY+VMXsu9BwPhd+4bHBP2kL6Ef7efQbIxhfo1TcJ80/rRF1SOeGdgZL 5eGYHC3Z/4vHW/li2VnVPj2jhIbL0jvgxIIjOfHYGX/thBuWvzfBS+OJAobf9KNg Tp2d5Jf787kcOpryKem/TqCseNUJotK0Umy1udN+RcIGZTkHQqdHzf98CiflPZ8f FKVTYhO1of/vxSKQquLn0nqKkMasMnH8USyu8Gk886mlR+C6sVZ+oiYIUitpm94h XwI094WQWXPiJxMyS5rTYijMcrnJKfJZPn8enfoyJwjqtGJSu1o9SwxvbnHoMSjd ajrScA== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 429mjy283w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 15 Oct 2024 21:29:39 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA04.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 49FLTZUK017727 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 15 Oct 2024 21:29:35 GMT Received: from hu-wcheng-lv.qualcomm.com (10.49.16.6) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Tue, 15 Oct 2024 14:29:34 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , , CC: , , , , , , , , Wesley Cheng Subject: [PATCH v29 30/33] ALSA: usb-audio: qcom: Don't allow USB offload path if PCM device is in use Date: Tue, 15 Oct 2024 14:29:12 -0700 Message-ID: <20241015212915.1206789-31-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241015212915.1206789-1-quic_wcheng@quicinc.com> References: <20241015212915.1206789-1-quic_wcheng@quicinc.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01b.na.qualcomm.com (10.47.209.197) To nalasex01b.na.qualcomm.com (10.47.209.197) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: nFqwywRDJJPwO0cuJoMYJYc0riSxpTxO X-Proofpoint-ORIG-GUID: nFqwywRDJJPwO0cuJoMYJYc0riSxpTxO X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 phishscore=0 mlxscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 impostorscore=0 clxscore=1015 spamscore=0 suspectscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410150143 Add proper checks and updates to the USB substream once receiving a USB QMI stream enable request. If the substream is already in use from the non offload path, reject the stream enable request. In addition, update the USB substream opened parameter when enabling the offload path, so the non offload path can be blocked. Signed-off-by: Wesley Cheng --- sound/usb/qcom/qc_audio_offload.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/sound/usb/qcom/qc_audio_offload.c b/sound/usb/qcom/qc_audio_offload.c index ca5be81a7fbd..8515a7d32c99 100644 --- a/sound/usb/qcom/qc_audio_offload.c +++ b/sound/usb/qcom/qc_audio_offload.c @@ -1479,12 +1479,17 @@ static void handle_uaudio_stream_req(struct qmi_handle *handle, goto response; } + mutex_lock(&chip->mutex); if (req_msg->enable) { - if (info_idx < 0 || chip->system_suspend) { + if (info_idx < 0 || chip->system_suspend || subs->opened) { ret = -EBUSY; + mutex_unlock(&chip->mutex); + goto response; } + subs->opened = 1; } + mutex_unlock(&chip->mutex); if (req_msg->service_interval_valid) { ret = get_data_interval_from_si(subs, @@ -1506,6 +1511,11 @@ static void handle_uaudio_stream_req(struct qmi_handle *handle, if (!ret) ret = prepare_qmi_response(subs, req_msg, &resp, info_idx); + if (ret < 0) { + mutex_lock(&chip->mutex); + subs->opened = 0; + mutex_unlock(&chip->mutex); + } } else { info = &uadev[pcm_card_num].info[info_idx]; if (info->data_ep_pipe) { @@ -1535,6 +1545,9 @@ static void handle_uaudio_stream_req(struct qmi_handle *handle, } disable_audio_stream(subs); + mutex_lock(&chip->mutex); + subs->opened = 0; + mutex_unlock(&chip->mutex); } response: