From patchwork Fri Aug 23 20:00:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 13775892 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 4B2D9198A20; Fri, 23 Aug 2024 20:01:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724443316; cv=none; b=T2hzH4STuAoLaej2lehn5Slw6M83WwE9MjEPHQncb8jvnK6kleOM6higu0qDgJ4s6XBbHkhY5NZ+I6DwHmo9cjKUDuxnQtCpi4T896brAWAxlocIvrDLv76AHn3C7W3VtRm61drpv9PTjutHHLwuMTvaF2Wmq6J3axuU6KJsmJk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724443316; c=relaxed/simple; bh=lw7y74FMUQgfwEquFaZBoNBGbghBe8E56AGuz8AUDtw=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=I3Eqmm/5YcO/N5xOJuFgYeH14VReyEe/fRjESC4pfT1KiPVBquciNoewMhPIs9CM9jdxHLjOi1p/0yZ6jhglzZDCOxFmAHUmqobI12Xri39ncDPQhLHRe78rWT7q45iz2rzKGuaVceZyvGuTtTSVrd5qeVA9iIeoiELk5iBP56o= 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=Bs6leHwl; arc=none smtp.client-ip=205.220.168.131 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="Bs6leHwl" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 47NDlE7p014793; Fri, 23 Aug 2024 20:01:23 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-type:date:from:in-reply-to:message-id:mime-version :references:subject:to; s=qcppdkim1; bh=FQceBJzv282ZgzUCIfn52eGt +Y4Pfhd+0oONvDqa46E=; b=Bs6leHwlhtOFdsubHqjczHmu+0zvd70w9xqEEQXN DmMVirpm095BmI0ZAkyFOcE5YWUM0N2XUG9IMZBmI0suqADfwSQb1IogaVSybW1M l1r/OfL8Yr8I4C25+Lkjf3e/wyi14gjOYTgO+SdHmjJ8z3M6P3aFDFZq+2mTh4/b pWttGOfEyV9zHpHRYHZp0Ji13+2Qzu2k3xAYA7GE+LMbDnJ9gpsfIFg3Skq1gGMh APF/dV7/N8tad6n24QvZTpeU6whAuv3wnNEAyyVxRz9dnCEp8N6Ao+qJ/yETLKqj bKHd5uwwegTBLCIV5cDiDfWdBt4VvnUyp70Ajgfsg5Tpkg== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 416ukyguey-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 23 Aug 2024 20:01:22 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA03.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 47NK1LFL001696 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 23 Aug 2024 20:01:22 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; Fri, 23 Aug 2024 13:01:21 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , CC: , , , , , , , , Wesley Cheng Subject: [PATCH v25 29/33] ALSA: usb-audio: qcom: Don't allow USB offload path if PCM device is in use Date: Fri, 23 Aug 2024 13:00:57 -0700 Message-ID: <20240823200101.26755-30-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240823200101.26755-1-quic_wcheng@quicinc.com> References: <20240823200101.26755-1-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: nalasex01a.na.qualcomm.com (10.47.209.196) 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-ORIG-GUID: XnhhrCmslDpPvQ1bZ49XPFY8Uj64WLIv X-Proofpoint-GUID: XnhhrCmslDpPvQ1bZ49XPFY8Uj64WLIv X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-08-23_16,2024-08-23_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 lowpriorityscore=0 bulkscore=0 mlxlogscore=999 malwarescore=0 suspectscore=0 mlxscore=0 impostorscore=0 priorityscore=1501 adultscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2408230147 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 a728e560a591..b76c61678738 100644 --- a/sound/usb/qcom/qc_audio_offload.c +++ b/sound/usb/qcom/qc_audio_offload.c @@ -1475,12 +1475,17 @@ 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, @@ -1502,6 +1507,11 @@ 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) { @@ -1525,6 +1535,9 @@ 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: