From patchwork Wed Aug 31 18:32:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 601759 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 9A02CECAAD1 for ; Wed, 31 Aug 2022 18:37:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232911AbiHaShU (ORCPT ); Wed, 31 Aug 2022 14:37:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232954AbiHaShB (ORCPT ); Wed, 31 Aug 2022 14:37:01 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A6752F47EB; Wed, 31 Aug 2022 11:33:10 -0700 (PDT) Received: from pps.filterd (m0279862.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 27VGmvo1023034; Wed, 31 Aug 2022 18:33:00 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=eUyzNrUe7h8wrZuH7Gy5duX/6zvORw6oWfUVvm+hwKw=; b=jhkyU3rvE0gJ3+EH1Ca04eyfqr2Rd2VjXFLIXOTGUNIGaNM4OLCm1daBPHcdGphWznM2 GFZD/keWeBfgcb9UDQUAAIRknl/z1kLNA3s0wleo2aeyEJLcgfrB3b5tgQphIXKAhVSh MMIEs1aY3TOfvqMSqYb3P71dEU7FKYRZqdbsBphv1CS82pPWkLO1MLRrETPHvRuudEWE wCwYPK/8HPMGmVw64u8KuNSWb5hw/SBb3/ZAmRzQavG0RnR7I0HRUVvgbpwqOYU6Emyn rXVN0V8BGfUuxx5BsCQWvFbqy+NLOotZft1h7ZLJCv13v9ataJ7vftHYTpKU7n4OmITm LQ== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jabgcrev6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 31 Aug 2022 18:33:00 +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 27VIWxEV001727 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 31 Aug 2022 18:33:00 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 15.2.986.29; Wed, 31 Aug 2022 11:32:59 -0700 From: Wesley Cheng To: , , CC: , , , Wesley Cheng Subject: [PATCH v5 4/5] usb: dwc3: gadget: Skip waiting for CMDACT cleared during endxfer Date: Wed, 31 Aug 2022 11:32:41 -0700 Message-ID: <20220831183242.27826-5-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220831183242.27826-1-quic_wcheng@quicinc.com> References: <20220831183242.27826-1-quic_wcheng@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) 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: XHzRTnJEOh68sH2Qhl2ZEyouAz3p57hp X-Proofpoint-GUID: XHzRTnJEOh68sH2Qhl2ZEyouAz3p57hp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-08-31_11,2022-08-31_03,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 mlxscore=0 lowpriorityscore=0 adultscore=0 clxscore=1015 phishscore=0 bulkscore=0 priorityscore=1501 mlxlogscore=458 spamscore=0 malwarescore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2208310089 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org For endxfer commands that do not require an endpoint complete interrupt, avoid having to wait for the command active bit to clear. This allows for EP0 events to continue to be handled, which allows for the controller to complete it. Otherwise, it is known that the endxfer command will fail if there is a pending SETUP token that needs to be read. Suggested-by: Thinh Nguyen Reviewed-by: Thinh Nguyen Signed-off-by: Wesley Cheng --- drivers/usb/dwc3/gadget.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index c9310645701d..4721561e4ba5 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -366,7 +366,9 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd, dwc3_writel(dep->regs, DWC3_DEPCMD, cmd); - if (!(cmd & DWC3_DEPCMD_CMDACT)) { + if (!(cmd & DWC3_DEPCMD_CMDACT) || + (DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_ENDTRANSFER && + !(cmd & DWC3_DEPCMD_CMDIOC))) { ret = 0; goto skip_status; }