From patchwork Mon Apr 10 23:19:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 13206831 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 77B04C76196 for ; Mon, 10 Apr 2023 23:20:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229804AbjDJXUL (ORCPT ); Mon, 10 Apr 2023 19:20:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56068 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229663AbjDJXUK (ORCPT ); Mon, 10 Apr 2023 19:20:10 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2A86E4D; Mon, 10 Apr 2023 16:20:09 -0700 (PDT) Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 33ANCdmc032106; Mon, 10 Apr 2023 23:20:07 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=AB6JC7lT307nwfRAxfmYuUEfDHcytjG0e2enSXsuARDS91zFRpMzjQtzHnoKegP5+n9e nOvgIIeHO46V6NnZ3VOqN2vRc4Vez5Ea+XEgZtIHZUtuByBHnirKujunr/FwYkkPPZ7m GQznEANjyRoNDmY2XkD1LmNL4GXyWQT837AGWHtq8Mv31oTj9URVgkmJEop86U3ivD+s +5k5Mq7MP16t2wE85aMXUNu5h6pUyHRJ3hjeNFl5+tBqz5q+HxUkVM/vOgmHAh+rNOYF RyleuwjQsfzMufUBd0H/jLlI518d8uElJBU4XmSBjYYdsQhA1tuUzpXQz7I9DgLCkdkb Wg== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3pvmnagwpp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 10 Apr 2023 23:20:07 +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 33ANK6it029474 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 10 Apr 2023 23:20:06 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; Mon, 10 Apr 2023 16:20:06 -0700 From: Wesley Cheng To: , CC: , , , , Wesley Cheng Subject: [PATCH v3 3/3] usb: dwc3: gadget: Execute gadget stop after halting the controller Date: Mon, 10 Apr 2023 16:19:54 -0700 Message-ID: <20230410231954.437-4-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230410231954.437-1-quic_wcheng@quicinc.com> References: <20230410231954.437-1-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: g2aW2SwlmXZO6rK8tP5AbcAGQz405Dx6 X-Proofpoint-GUID: g2aW2SwlmXZO6rK8tP5AbcAGQz405Dx6 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=2023-04-10_16,2023-04-06_03,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=627 impostorscore=0 adultscore=0 phishscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 bulkscore=0 priorityscore=1501 malwarescore=0 spamscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304100205 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 Acked-by: Thinh Nguyen --- 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)