From patchwork Mon Jun 10 23:57:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 803450 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 AF055153563; Mon, 10 Jun 2024 23:58:43 +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=1718063925; cv=none; b=aoJPDaS218A7jZ3lQEAKoNmFgQ0O4c5digQgnLa7Dbj1iHlHnoXj33BdW22PKHGGG4oeM0bpRlbXOixAliqIEqYzGRbN45oK6OmlzMzs47YcE5dx7yvo6ug1u7GlAQSFrR4cYT6cLRQlrOMqlHp82Pr/tR9BdPi43p1W8B4EEO4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718063925; c=relaxed/simple; bh=WRZmNuht/RTd8zSsVLQl8vLqCGMpQdxRvAiKQkxLjQA=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=OrL+bwWiec7XKtueX0anSe8Bv7Gl1TWF+q8IWbAcA8NA1uTu2xDfX/abhAYLlOHH3rA0KCawv9QYJxTHo0ZEfDJY3hDvN0gjgvm0fNYcviMr5FI19sNkvgWSnSZ81R7yhElgqYHQP+KpGmr+ipopeYJyP1UjByKHYQkgQuPsZcs= 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=BEFpizvq; 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="BEFpizvq" Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 45AF4Lfh011973; Mon, 10 Jun 2024 23:58:25 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=LAe3DSaK4AzaJoCeRHjiZexm bH+KMs7/LNqcwt8x4Pg=; b=BEFpizvqGi7Li9lMLEMk5fSFUBIdw7a2iYQFlNox qRimbt2ghQhMM7LXgSZEbdjGWrwO0kpAeKKMGhbyldVXY9OcbaGgOFLV0Xxy3bB7 xgjQJxjQusLPAhTnevHZ3Vwsx1UocpTgaEm2pKoWz+wfVPQE6mOgTagpTrlfhjC1 fle2QEr2C5vxcoGWz3NFh8dQirBrmdEyFts/gt3EDYmGPZY1e/hNylShhAW6dY0T hJWmyVtWVAAH8f5n1Ctvir07EkJYck2o6Q9Ra1m5/hkdfoAj1bVX5Tp82bdeE9kK tCLM4+lbBdezmzDGmrsXly+GUz8f8B1uFiZ3zvU/u+sYbA== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3ymgk8w0g9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 10 Jun 2024 23:58:24 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA04.qualcomm.com (8.17.1.19/8.17.1.19) with ESMTPS id 45ANwOCc001551 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 10 Jun 2024 23:58:24 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; Mon, 10 Jun 2024 16:58:23 -0700 From: Wesley Cheng To: , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v23 17/32] ALSA: usb-audio: Do not allow USB offload path if PCM device is in use Date: Mon, 10 Jun 2024 16:57:53 -0700 Message-ID: <20240610235808.22173-18-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240610235808.22173-1-quic_wcheng@quicinc.com> References: <20240610235808.22173-1-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-GUID: L8T2OgIKO9Y-xKBh3YFF2oGimZ5L-hH_ X-Proofpoint-ORIG-GUID: L8T2OgIKO9Y-xKBh3YFF2oGimZ5L-hH_ 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=2024-06-10_07,2024-06-10_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 lowpriorityscore=0 mlxlogscore=999 mlxscore=0 adultscore=0 malwarescore=0 priorityscore=1501 suspectscore=0 spamscore=0 bulkscore=0 clxscore=1015 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405170001 definitions=main-2406100177 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 eda16d6df0d7..648b97aeae1d 100644 --- a/sound/usb/qcom/qc_audio_offload.c +++ b/sound/usb/qcom/qc_audio_offload.c @@ -1460,12 +1460,17 @@ 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, @@ -1487,6 +1492,11 @@ 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) { @@ -1510,6 +1520,9 @@ 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: