From patchwork Fri Oct 11 00:06:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 834684 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 6D8FC1D0F54; Fri, 11 Oct 2024 00:07:43 +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=1728605265; cv=none; b=KVSbNl1L+4OX7VO+Vz6EjrkJZ1EZec7avLXbss4H0aOxHrbVeofUAj6g0JEDNjENhRBlGC0FeJf+aQNR/UBk2TngyJKYOcUSnHpCwLvXVAhQ476uEZGIOKa9Wo63FZQvTrbNFof/z9fzsZ+EhfeyJxlkrwjN9sEBjRKX+A6tpJI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728605265; c=relaxed/simple; bh=ILm9IsIeFzOmvfKayjiNI915PqE3+N7GH7Fx1QFLIM4=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=T8aMa16hTipfrbc1Tl0xBEKwKoXZ5nfhRwK3BdmDPdOaSyOqDlqwqPwKPE1/c+EKyFDwXv60L9LLzh/L4DtQEbrLRNz9XbVPhpUSO1j7T7x+BaUeJ+964CgO4JUw9CIQzkof7ttZTMz89+DFI2KnPyWOFGXWuU2UMcWExmV5lo8= 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=oLA18+LS; 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="oLA18+LS" Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49ACKPOs011317; Fri, 11 Oct 2024 00:07:19 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= ps3pj1rWGaCrzwhX4NetRAi9YyPcgs/OhsJfcZt+G6I=; b=oLA18+LSlAOoQ4Dm 8h6+wGDAaWEoGVtGBGCOpEs6EAy0TOmnomnFCjZtdFddgSdi29vuuBa2lITD/H0x IfBplFTlVLWEIcuR7XtcgYx/aauxSKzrxe5gzw6dHTjX3UQUMSP9OLZMcvUFaXmI 5CVgtzHzaMswYrL24VeDUWwPJEZUwLmC/0goyGhf9t7I2L9j1TMeyzgQYvgMCMvs isJYMAl+ZMxJWth5qJeUvTweHoSmU26NNVTz3aENeaG316qqe66CqAqxhdqUqmf1 5MTsB1CL/ol37aeL2svbKmqwKrhTrMrR1vPT7WsrhZYXq/+nNY8QWn+kQwvLvDOF tSzCjQ== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 425xthv206-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 11 Oct 2024 00:07:19 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA02.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 49B07IbD016421 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 11 Oct 2024 00:07:18 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; Thu, 10 Oct 2024 17:07:18 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , , CC: , , , , , , , , Wesley Cheng Subject: [PATCH v28 29/32] ALSA: usb-audio: qcom: Don't allow USB offload path if PCM device is in use Date: Thu, 10 Oct 2024 17:06:42 -0700 Message-ID: <20241011000650.2585600-58-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241011000650.2585600-1-quic_wcheng@quicinc.com> References: <20241011000650.2585600-1-quic_wcheng@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@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-ORIG-GUID: H-t472uILBq7NQGmMflpZPOv8PJAKA91 X-Proofpoint-GUID: H-t472uILBq7NQGmMflpZPOv8PJAKA91 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 mlxscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 spamscore=0 priorityscore=1501 bulkscore=0 phishscore=0 clxscore=1015 mlxlogscore=999 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410100159 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 4de4b8b3d2a2..a7ad15404fd1 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) { @@ -1529,6 +1539,9 @@ 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: