From patchwork Wed Aug 17 18:23:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 12946745 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 46FC8C32773 for ; Thu, 18 Aug 2022 04:22:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242858AbiHREWX (ORCPT ); Thu, 18 Aug 2022 00:22:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48054 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243293AbiHREWH (ORCPT ); Thu, 18 Aug 2022 00:22:07 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 145E75005F; Wed, 17 Aug 2022 21:22:07 -0700 (PDT) Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 27I3ghIG001902; Thu, 18 Aug 2022 04:22:03 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=L2rlREj2AY/nzFpbESs9SR0RuO1kMNcNpL7I6krXteE=; b=EaFPTL3Fo9GN+W1Nn9sv4q+nQ9f+RFf3FeWNQnNaCXuakMid+0nVPuEuQjwRse1y9wIP uqhS4DUlj9zeCsoHGhcdD+qhvmKJVDGWBQ79yBHAGGHyTJfvjVIAAx2PTAj7DOaPKqzp pZsgkqMezjm+cRdvHYEGNOibgFEodSDHXJGyIP9s4SpODVjjcY9L4oQTYaRm9Q9vs5aK RwEO2J02LlFmEktJvBIHpsDKXk2vI1caYg+d9SsZ2kytXxcLK7A7NCjU5aDVb5TpfS4w sGH1zIv1AlA9okxnRhBhuL+XhpNev9SG/EwUscXI3kAn91Mm7Nn0Ra0UJCHOw9/lw9dH xQ== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3j0w7hm45a-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Aug 2022 04:22:03 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 27I4GwiR025629 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Aug 2022 04:17:02 GMT Received: from nalasex01b.na.qualcomm.com (10.47.209.197) 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 15.2.986.22; Wed, 17 Aug 2022 19:24:13 -0700 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 15.2.986.22; Wed, 17 Aug 2022 11:24:11 -0700 From: Wesley Cheng To: , , CC: , , , Wesley Cheng Subject: [PATCH v4 3/9] usb: dwc3: gadget: Synchronize IRQ between soft connect/disconnect Date: Wed, 17 Aug 2022 11:23:53 -0700 Message-ID: <20220817182359.13550-4-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220817182359.13550-1-quic_wcheng@quicinc.com> References: <20220817182359.13550-1-quic_wcheng@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) 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: qLo-_WBoHS_my0jNsGEiOMzK_rYDw5i_ X-Proofpoint-GUID: qLo-_WBoHS_my0jNsGEiOMzK_rYDw5i_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-08-18_02,2022-08-16_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 clxscore=1015 mlxlogscore=781 suspectscore=0 spamscore=0 impostorscore=0 adultscore=0 malwarescore=0 bulkscore=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2208180014 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Ensure that there are no pending events being handled in between soft connect/disconnect transitions. As we are keeping interrupts enabled, and EP0 events are still being serviced, this avoids any stale events from being serviced. Reviewed-by: Thinh Nguyen Signed-off-by: Wesley Cheng --- drivers/usb/dwc3/gadget.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 391e40c35747..3b83e3c4b932 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2569,6 +2569,8 @@ static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on) return 0; } + synchronize_irq(dwc->irq_gadget); + if (!is_on) { ret = dwc3_gadget_soft_disconnect(dwc); } else {