From patchwork Wed Mar 22 09:27:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna Kurapati X-Patchwork-Id: 13183747 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 7364FC7619A for ; Wed, 22 Mar 2023 09:28:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230184AbjCVJ2R (ORCPT ); Wed, 22 Mar 2023 05:28:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48496 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229836AbjCVJ2O (ORCPT ); Wed, 22 Mar 2023 05:28:14 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D9E4C4ED8; Wed, 22 Mar 2023 02:28:11 -0700 (PDT) Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 32M9I8Wl020803; Wed, 22 Mar 2023 09:27:56 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=qcppdkim1; bh=6avEhP/cuHiS2fHBO2bSzDTAnuIaYByahfm2+cfiACw=; b=Hn9w2fCo5cUaZFcDpDth4aiZB9mUl0Nk+X53mLDsnZni+GOUWn0WOit8tpe9U/OlOqGT mpaQjU/k4sVaEkk6MR8bRVqB3D+QKUQeQEe9OTi6kN6NCxc1+Vg+u/QPgTFVtZNnpB+8 iILcgVTpvx8znp1U6QWortIXobQfvdVJOZLAqSREmlWy1qWFe2JViiG3/gjSGKhLI/Df yY+1ShaYq5bZJKqMc+dgxkuGROo90CUPQmzy4i1Fw5hwgk9V16BU7MJOlF+sJ0MMgmKx RTdzX4ppo7tKYrzI4WYuJODfQ6Osg/sWizPvevVwVotdB5jkgv2YZr3uCwAqB0JkAUgg ZQ== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3pfbx030e7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 22 Mar 2023 09:27:56 +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 32M9RsKs001567 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 22 Mar 2023 09:27:54 GMT Received: from hu-kriskura-hyd.qualcomm.com (10.80.80.8) 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 15.2.986.41; Wed, 22 Mar 2023 02:27:50 -0700 From: Krishna Kurapati To: Thinh Nguyen , Greg Kroah-Hartman , Alan Stern , "Rafael J . Wysocki" , Geert Uytterhoeven , Sebastian Reichel , Colin Ian King , Jiantao Zhang CC: , , , , , , Krishna Kurapati Subject: [RFC 0/2] Handle core soft reset during Pullup Date: Wed, 22 Mar 2023 14:57:38 +0530 Message-ID: <20230322092740.28491-1-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.40.0 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: IpvOQi1nJc6AzADBqu2bzmCEfDJW9uXx X-Proofpoint-ORIG-GUID: IpvOQi1nJc6AzADBqu2bzmCEfDJW9uXx 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=2023-03-22_06,2023-03-21_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 suspectscore=0 adultscore=0 impostorscore=0 spamscore=0 malwarescore=0 priorityscore=1501 clxscore=1011 phishscore=0 lowpriorityscore=0 mlxlogscore=823 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303150002 definitions=main-2303220069 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org When core soft reset timeout happens, pullup doesn't check for the return value and proceeds to setup event buffers and starts the controller. In this scneario, it is observed sometimes that the GEVTADDR LO/HI registers read zero while we are setting the run stop bit and we end up accessing address 0x00 leading to a crash. This series tries to address this issue by handling the timeout and return back appropriate error code to configfs for it to retry enumeration if it chooses to. Krishna Kurapati (2): usb: dwc3: gadget: Bail out in pullup if soft reset timeout happens usb: gadget: udc: Handle gadget_connect failure during bind operation drivers/usb/dwc3/gadget.c | 5 ++++- drivers/usb/gadget/udc/core.c | 17 +++++++++++++---- 2 files changed, 17 insertions(+), 5 deletions(-)