From nobody Fri Nov 29 03:38:09 2024 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 AAE0115852E; Wed, 25 Sep 2024 07:23:53 +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=1727249035; cv=none; b=MlfByUVkHZlc0dvwN0EJwaUzyEOl1Rc1ec0XKPntQWe7iGf3kgfj8JvI4J3WXY3YSEJuBtNhr7hRtg+kVc7y6l5YhqXvvSE2DrkxtnveG6uTg77pqwCbDD88KAAnsqptaTfLvKdGPk4K152BoduBDGVdrucXB1tDvmH6cxK6cO0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727249035; c=relaxed/simple; bh=vrJLRTaM8vLQbQvHYHMUqyBvqO0BZuVwMB/6a3RGmP4=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=e6hJiGGv5/qIpL+AqN/aJpUV21U/GrfpiGX0AoQx9RMcU91X5ivfyQOwD1Q+1xQ7MjTV2x56qrcwHqqrU3NKeXBc7OIYAzTJGfFfZlH3adkT4VTHM1JgxtqfrEV26oQqrfepzpQ3/kQkvlNfM46w/F5HE0NnMb87dZyfTk7SrNM= 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=oOBiE37b; 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="oOBiE37b" Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 48OIu8I8017406; Wed, 25 Sep 2024 07:23:49 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to; s=qcppdkim1; bh=RW9uqI2u7e537Jy88OFRJu 5D/8fSuY3/wdo7VX82wrY=; b=oOBiE37bYFBZB1YC2PSmpDc84QRaucNqgjEGNT 0JvClgtbqF1EL1iDcMYwO8zT8uyGaHqoCg6NhCUTg9e8nKMCYqNvlpijMFBQjPIV Kz847Q2fl2DlZaON1DmUQPVuYUjSPnYn87zffeMgHxxcd8GLjiX71ff177DVbhhZ TyLpRfvn03BEOtgw+bNI3tqv13Uwoq1IFFDCdw7Jj1+fx7Q9AbgHqZ6l754uGMk8 VQ32KWViiRRpkM4zHY5sGyhahEcY8rOPVxtMDLr2QDIHKEUKpejxCAuyZjaxAqxE uC9Tv8OSdteEDSRKHkY+Rkz5qhx2xLSkg323NMW4hCqKxVsA== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 41snqyka4p-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 25 Sep 2024 07:23:49 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA02.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 48P7Nmrq000420 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 25 Sep 2024 07:23:48 GMT Received: from hu-deesin-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Wed, 25 Sep 2024 00:23:44 -0700 From: Deepak Kumar Singh To: , , , CC: , , , , , Deepak Kumar Singh Subject: [PATCH V2] rpmsg: glink: Add abort_tx check in intent wait Date: Wed, 25 Sep 2024 12:53:28 +0530 Message-ID: <20240925072328.1163183-1-quic_deesin@quicinc.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: dF6Huu5oJ8GGHAu5Q5qQUqkjRK83dJ9O X-Proofpoint-ORIG-GUID: dF6Huu5oJ8GGHAu5Q5qQUqkjRK83dJ9O 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 priorityscore=1501 impostorscore=0 adultscore=0 bulkscore=0 phishscore=0 mlxlogscore=999 spamscore=0 lowpriorityscore=0 clxscore=1011 mlxscore=0 malwarescore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2409250051 Content-Type: text/plain; charset="utf-8" From: Sarannya S On remote susbsystem restart rproc will stop glink subdev which will trigger qcom_glink_native_remove, any ongoing intent wait should be aborted from there otherwise this wait delays glink send which potentially delays glink channel removal as well. This further introduces delay in ssr notification to other remote subsystems from rproc. Currently qcom_glink_native_remove is not setting channel->intent_received, so any ongoing intent wait is not aborted on remote susbsystem restart. abort_tx flag can be used as a condition to abort in such cases. Adding abort_tx flag check in intent wait, to abort intent wait from qcom_glink_native_remove. Fixes: c05dfce0b89e ("rpmsg: glink: Wait for intent, not just request ack") Cc: stable@vger.kernel.org Signed-off-by: Sarannya S Signed-off-by: Deepak Kumar Singh --- drivers/rpmsg/qcom_glink_native.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_n= ative.c index 82d460ff4777..ff828531c36f 100644 --- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -438,7 +438,6 @@ static void qcom_glink_handle_intent_req_ack(struct qco= m_glink *glink, =20 static void qcom_glink_intent_req_abort(struct glink_channel *channel) { - WRITE_ONCE(channel->intent_req_result, 0); wake_up_all(&channel->intent_req_wq); } =20 @@ -1354,8 +1353,9 @@ static int qcom_glink_request_intent(struct qcom_glin= k *glink, goto unlock; =20 ret =3D wait_event_timeout(channel->intent_req_wq, - READ_ONCE(channel->intent_req_result) >=3D 0 && - READ_ONCE(channel->intent_received), + (READ_ONCE(channel->intent_req_result) >=3D 0 && + READ_ONCE(channel->intent_received)) || + glink->abort_tx, 10 * HZ); if (!ret) { dev_err(glink->dev, "intent request timed out\n"); --=20 2.34.1