From patchwork Tue Feb 13 00:54:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 13554328 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 526AE224C2; Tue, 13 Feb 2024 00:54:56 +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=1707785698; cv=none; b=nUCHOno07c3EsrBMGynTddYKI93qALG0mb9om2EeonRV/1a5Ap5Ob7Nf5FfZ4oA9zsb3vMUrsqPSSGUkUevdvpNJRel4euOgUPlcKjcgnGrrOlhs+mVrqOddAzlM+qp98v9GXMhucz6LxYHZsw/73GLZUVb7KOr5OsNhx6yImZ0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707785698; c=relaxed/simple; bh=px268WXk+l3B9SlGv+cxMo3ljNfa2rsGXtf1IZjb19I=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ogyfgMZh1c0f5JiFLgSX8Rrk3mb0XJmtxu8jBa/ECgLZRhOLUmWmkai1ASz8FiHhsbMy1YUJBo4w3PG/SlI2XRQR0yo6x9cU3dHUoBK7awo8rQU/dxjM6F/YHgHBX2fh87vZorxlTuRbRa8j+U72mMYPB9XrFe4jf9ln1cisW8Q= 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=kQFH+Wp6; 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="kQFH+Wp6" Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 41D0r8NU005428; Tue, 13 Feb 2024 00:54:43 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=wGyjbtwBQ0jltPebsxqO vKMXQoPB3aFFrhoSoalXCkM=; b=kQFH+Wp6btDxu13Ls4XlW+feVzR8ls1mvWjG GFgIgk6Or0hmYUWn0m4mRIo4X40iYoeOOsUZA5jZqtxRwk2jBDGOxMiVb2pCnW7n 9hTNw3VD83C+yWtTL9zRX1go8Iww1q1bmQYU4gN08mnMkzI2oNAuFKTpI+SndE2V aISikBE8tPK5/zHviGfd03qXestegCJIeg1/tF3d+l1AFQgIdCOdkr38qOQqfWXZ mv+NMzPMw9TGx/yUCZ6yva0ceQw1XOOtzwgcWDO2PiCPBiDobaato4MKW2O4zGd2 wlsaEf0+kPo0jxRdooIB/7UOXkjX8O1a0SFV0fBZy92DMRBoYg== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3w62kt4tym-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 13 Feb 2024 00:54:43 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 41D0sgWj016291 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 13 Feb 2024 00:54:42 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 15.2.1118.40; Mon, 12 Feb 2024 16:54:42 -0800 From: Wesley Cheng To: , , , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v15 34/50] ALSA: usb-audio: Do not allow USB offload path if PCM device is in use Date: Mon, 12 Feb 2024 16:54:06 -0800 Message-ID: <20240213005422.3121-35-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240213005422.3121-1-quic_wcheng@quicinc.com> References: <20240213005422.3121-1-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: tHFlHBEFnTWLCrkIbGP9XDBLxMqXO3rh X-Proofpoint-ORIG-GUID: tHFlHBEFnTWLCrkIbGP9XDBLxMqXO3rh X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-12_20,2024-02-12_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 suspectscore=0 phishscore=0 priorityscore=1501 mlxscore=0 mlxlogscore=963 spamscore=0 malwarescore=0 adultscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2401310000 definitions=main-2402130005 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 af67d219fbec..31c0cf5916a0 100644 --- a/sound/usb/qcom/qc_audio_offload.c +++ b/sound/usb/qcom/qc_audio_offload.c @@ -1448,12 +1448,17 @@ 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, @@ -1475,6 +1480,11 @@ 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) { @@ -1498,6 +1508,9 @@ 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: