From patchwork Mon Aug 15 21:31:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 598458 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 607F2C3F6B0 for ; Tue, 16 Aug 2022 01:39:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240324AbiHPBjI (ORCPT ); Mon, 15 Aug 2022 21:39:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38706 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230374AbiHPBil (ORCPT ); Mon, 15 Aug 2022 21:38:41 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A3F95EEF08; Mon, 15 Aug 2022 14:31:58 -0700 (PDT) Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 27FKmGtw028291; Mon, 15 Aug 2022 21:31:54 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=bPl1ixCE3L9W0j/Y/JC8KtD4/nvB3ebPmz0uiK4zZrI=; b=PnZ+d44EGSn1MRYrqyZ9ewrojfQ4antoVbiBNDuH33tZG29E7gKTZhfd5bj41EpxJXO4 yczB7AcaSiLsLgh3aEFUCnby6wNQjM3Zi+4UHYrkG8YNqDY8WBWs8hYz5YkGmTgIz9HI HD9fmFcFTHRBPV8rxOM9JSwM4XtsAMTigL7ckoOK2byO68a+XzfJ2wDOHX4NKGELDMGU 6J/vxSh9tAOavZpNuGed0G/aefhoUQldVYFXAiSgiUNUwwwU2GeR50w+EyQ/FKk4x1vq AZLtKi/lZbwm4kabjzIhwK5aPwXUA4eU7oTFxL17RKMBL3EFOsjVOJw8d5hw08CjsseH iA== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3hx467ekhv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 15 Aug 2022 21:31:54 +0000 Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 27FLVrx7014768 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 15 Aug 2022 21:31:53 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 15.2.986.22; Mon, 15 Aug 2022 14:31:53 -0700 From: Wesley Cheng To: , CC: , , , , Wesley Cheng Subject: [PATCH v3 3/8] usb: dwc3: gadget: Synchronize IRQ between soft connect/disconnect Date: Mon, 15 Aug 2022 14:31:29 -0700 Message-ID: <20220815213134.23783-4-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220815213134.23783-1-quic_wcheng@quicinc.com> References: <20220815213134.23783-1-quic_wcheng@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] 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: 9rJL7U0CYAP_E87SO9vMRnU01kGWH44v X-Proofpoint-GUID: 9rJL7U0CYAP_E87SO9vMRnU01kGWH44v 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=2022-08-15_08,2022-08-15_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxlogscore=679 phishscore=0 clxscore=1015 lowpriorityscore=0 bulkscore=0 impostorscore=0 priorityscore=1501 mlxscore=0 suspectscore=0 spamscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2208150082 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. 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 {