From patchwork Fri Apr 7 22:40:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 671411 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 71A11C6FD1D for ; Fri, 7 Apr 2023 22:40:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230446AbjDGWkw (ORCPT ); Fri, 7 Apr 2023 18:40:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46766 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230413AbjDGWku (ORCPT ); Fri, 7 Apr 2023 18:40:50 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8349DCC23; Fri, 7 Apr 2023 15:40:46 -0700 (PDT) Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 337MeC6E023478; Fri, 7 Apr 2023 22:40:40 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=bI/wZP7ubTjCdHoQXeZS5R4X8U4Eh+xW5LDQQWeAzvw=; b=iNuq+OOEHuLKFivUAqE7GI0gY20XA4SlbCYhl6fpSZBrNK7a95QlBHoHdJcxLkPiXyq4 XkledpZT3cNk1lyKRVNQX6yKdKlx8tpQe5puFeEm7fM/mNkvN+k0aJGOOz4hb59WNKXG 9XKVAhrUclkM9O4cOGBFyvioG989UPmhEB4IQ66zY/2Z+UmSXPMC6bY0l9EWEVT0OTox qH+94WaFbrs84ffi45xXA9Aoy49ecvbzVlOhm0dNjrnerWoqIf8LnP5Gv5pN2eMYFXJF tRspnHmCdCeEyjWjE1K8HXIb2Jl0VY79JDgYOJcqQejEbRLTCa9jjoCF6T/k8PltHzFn gQ== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3psv4dmbu5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 07 Apr 2023 22:40:40 +0000 Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 337Mednk032525 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 7 Apr 2023 22:40:39 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 15.2.986.42; Fri, 7 Apr 2023 15:40:38 -0700 From: Wesley Cheng To: , CC: , , , , Wesley Cheng Subject: [PATCH v2 3/3] usb: dwc3: gadget: Execute gadget stop after halting the controller Date: Fri, 7 Apr 2023 15:40:25 -0700 Message-ID: <20230407224025.22315-4-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230407224025.22315-1-quic_wcheng@quicinc.com> References: <20230407224025.22315-1-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-GUID: CVG6L4uznfyjBYkr0cg9LmP7ve9qeDrW X-Proofpoint-ORIG-GUID: CVG6L4uznfyjBYkr0cg9LmP7ve9qeDrW X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-07_14,2023-04-06_03,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 impostorscore=0 mlxscore=0 lowpriorityscore=0 suspectscore=0 priorityscore=1501 malwarescore=0 spamscore=0 mlxlogscore=619 phishscore=0 bulkscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304070204 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Do not call gadget stop until the poll for controller halt is completed. DEVTEN is cleared as part of gadget stop, so the intention to allow ep0 events to continue while waiting for controller halt is not happening. Fixes: c96683798e27 ("usb: dwc3: ep0: Don't prepare beyond Setup stage") Signed-off-by: Wesley Cheng --- drivers/usb/dwc3/gadget.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 91768f1bdbaf..9715de8e99bc 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2566,7 +2566,6 @@ static int dwc3_gadget_soft_disconnect(struct dwc3 *dwc) * bit. */ dwc3_stop_active_transfers(dwc); - __dwc3_gadget_stop(dwc); spin_unlock_irqrestore(&dwc->lock, flags); /* @@ -2596,7 +2595,19 @@ static int dwc3_gadget_soft_disconnect(struct dwc3 *dwc) * remaining event generated by the controller while polling for * DSTS.DEVCTLHLT. */ - return dwc3_gadget_run_stop(dwc, false, false); + ret = dwc3_gadget_run_stop(dwc, false, false); + + /* + * Stop the gadget after controller is halted, so that if needed, the + * events to update EP0 state can still occur while the run/stop + * routine polls for the halted state. DEVTEN is cleared as part of + * gadget stop. + */ + spin_lock_irqsave(&dwc->lock, flags); + __dwc3_gadget_stop(dwc); + spin_unlock_irqrestore(&dwc->lock, flags); + + return ret; } static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on)