From patchwork Wed Dec 8 10:05:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neal Liu X-Patchwork-Id: 12663977 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 683ACC4332F for ; Wed, 8 Dec 2021 10:06:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229927AbhLHKKX (ORCPT ); Wed, 8 Dec 2021 05:10:23 -0500 Received: from twspam01.aspeedtech.com ([211.20.114.71]:7962 "EHLO twspam01.aspeedtech.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229636AbhLHKKV (ORCPT ); Wed, 8 Dec 2021 05:10:21 -0500 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 1B89eqpN032351; Wed, 8 Dec 2021 17:40:53 +0800 (GMT-8) (envelope-from neal_liu@aspeedtech.com) Received: from localhost.localdomain (192.168.10.10) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 8 Dec 2021 18:05:52 +0800 From: Neal Liu To: Felipe Balbi , Greg Kroah-Hartman , Joel Stanley , Andrew Jeffery , Cai Huoqing , Tao Ren , Julia Lawall , "kernel test robot" , Sasha Levin , , , , , CC: Neal Liu , Subject: [PATCH v3 2/4] usb: aspeed-vhub: fix remote wakeup failure in iKVM use case Date: Wed, 8 Dec 2021 18:05:43 +0800 Message-ID: <20211208100545.1441397-3-neal_liu@aspeedtech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211208100545.1441397-1-neal_liu@aspeedtech.com> References: <20211208100545.1441397-1-neal_liu@aspeedtech.com> MIME-Version: 1.0 X-Originating-IP: [192.168.10.10] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 1B89eqpN032351 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Signaling remote wakeup if an emulated USB device has any activity if the device is allowed by host. Signed-off-by: Neal Liu --- drivers/usb/gadget/udc/aspeed-vhub/epn.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/gadget/udc/aspeed-vhub/epn.c b/drivers/usb/gadget/udc/aspeed-vhub/epn.c index 917892ca8753..ccc239b5cc17 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/epn.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/epn.c @@ -381,6 +381,11 @@ static int ast_vhub_epn_queue(struct usb_ep* u_ep, struct usb_request *u_req, } else u_req->dma = 0; + if (ep->dev->wakeup_en) { + EPVDBG(ep, "Wakeup host first\n"); + ast_vhub_hub_wake_all(vhub); + } + EPVDBG(ep, "enqueue req @%p\n", req); EPVDBG(ep, " l=%d dma=0x%x zero=%d noshort=%d noirq=%d is_in=%d\n", u_req->length, (u32)u_req->dma, u_req->zero,