From patchwork Thu Feb 23 05:18:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prashanth K X-Patchwork-Id: 13149864 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 11F0BC61DA4 for ; Thu, 23 Feb 2023 05:18:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233182AbjBWFS4 (ORCPT ); Thu, 23 Feb 2023 00:18:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43172 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233179AbjBWFSx (ORCPT ); Thu, 23 Feb 2023 00:18:53 -0500 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 024A73C78F; Wed, 22 Feb 2023 21:18:51 -0800 (PST) Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 31N2RjqX020464; Thu, 23 Feb 2023 05:18:48 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=+Lw7UTc4O0iuLiYFsUORHobiA42VjkXdjQpQhes49ho=; b=bI///UeGhIKYY1lnlyRDHCOcKr0MDotugA0dfmBp3bnKA8PgP0iiwpF82U+mIJ/w7FIV 6vaDahqv//d1T5Kgy9I+vHn+JczodW5p6NCqjDIf1ZKpQxxyMr6VAtEexAnQgfHzAmUg Z5tXvrvAZXnr2vqFYtW1sHZQbK8JpsFnmq+QNt9/XgyFSxrgRk/3Yq0bXQxuLwKR+9kS 1g2tom6wfzCMiLIXytgoI+hSTkUwBO5HpCksFXptmXpUUcvVDZeSABQqsXBc3mBrWfzt AlRKCDSEKGH5T/J4bmjz1JBolcXjqvBtWnmjl7AofEcDsVeGSHh36W5E61AUtimFKT0N yg== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3nwyc5gb8h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 23 Feb 2023 05:18:48 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 31N5Il0Z017975 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 23 Feb 2023 05:18:47 GMT Received: from hu-prashk-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 Feb 2023 21:18:44 -0800 From: Prashanth K To: Greg Kroah-Hartman , Thinh Nguyen , Jakob Koschel , =?utf-8?b?SsOzIMOBZ2lsYSBCaXRzY2g=?= , Alan Stern CC: Pratham Pratap , Jack Pham , , , Prashanth K Subject: [PATCH v1 1/2] usb: dwc3: gadget: Change condition for processing suspend event Date: Thu, 23 Feb 2023 10:48:29 +0530 Message-ID: <1677129510-10283-2-git-send-email-quic_prashk@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1677129510-10283-1-git-send-email-quic_prashk@quicinc.com> References: <1677129510-10283-1-git-send-email-quic_prashk@quicinc.com> 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-ORIG-GUID: OC8oiRRx223cOZ4fNAOhk93aYCKFIJU- X-Proofpoint-GUID: OC8oiRRx223cOZ4fNAOhk93aYCKFIJU- X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.170.22 definitions=2023-02-23_02,2023-02-22_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 phishscore=0 spamscore=0 mlxlogscore=634 bulkscore=0 adultscore=0 mlxscore=0 priorityscore=1501 lowpriorityscore=0 impostorscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302230045 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Currently we process the suspend interrupt event only if the device is in configured state. Consider a case where device is not configured and got suspend interrupt, in that case our gadget will still use 100mA as composite_suspend didn't happen. But battery charging specification (BC1.2) expects a downstream device to draw less than 2.5mA when unconnected OR suspended. Fix this by removing the condition for processing suspend event, and thus composite_resume would set vbus draw to 2. Fixes: 72704f876f50 ("dwc3: gadget: Implement the suspend entry event handler") Signed-off-by: Prashanth K --- drivers/usb/dwc3/gadget.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 3c63fa9..07989c6 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -4239,15 +4239,8 @@ static void dwc3_gadget_interrupt(struct dwc3 *dwc, break; case DWC3_DEVICE_EVENT_SUSPEND: /* It changed to be suspend event for version 2.30a and above */ - if (!DWC3_VER_IS_PRIOR(DWC3, 230A)) { - /* - * Ignore suspend event until the gadget enters into - * USB_STATE_CONFIGURED state. - */ - if (dwc->gadget->state >= USB_STATE_CONFIGURED) - dwc3_gadget_suspend_interrupt(dwc, - event->event_info); - } + if (!DWC3_VER_IS_PRIOR(DWC3, 230A)) + dwc3_gadget_suspend_interrupt(dwc, event->event_info); break; case DWC3_DEVICE_EVENT_SOF: case DWC3_DEVICE_EVENT_ERRATIC_ERROR: