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: 12695311 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DEFCBC433EF for ; Wed, 8 Dec 2021 10:08:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Sm9e4/r/TH18lpT69NWfRMQ8ZFaGdKlAZeu2Wgm23dc=; b=pa28hUDpZZfAsv FlmXF0yqt2JWmEzfpLHSQ5Aaf956h2fnxLMlNMkZBsLTraLb6IhNr3VY7fxxPxGBlfjnqneB+g8H9 55EruuzWRTGUbDF1169BadVR6bzROA6NoEvS0eQFlWjjtcD33YsvtLrwM8F13EW0OUL9MHY2juzQR J6htY4UvvcBJuXLYfpLOh5CV9EN6UTG5Gwx3U8Je2n2Nd6VkgiLw41hts94vI92VRM60tMm8EUakR pc1Zz0PjlFO0khTGoCymVJG1f6RZz2YcY1I0sQGvy5Z5FLePFaUv9jTjR7vN8SEphHNV4NCvg6WnS /IFggyN+zjWY4lAuidBA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mutqg-00C2OL-WD; Wed, 08 Dec 2021 10:06:55 +0000 Received: from twspam01.aspeedtech.com ([211.20.114.71]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mutqS-00C2KR-33 for linux-arm-kernel@lists.infradead.org; Wed, 08 Dec 2021 10:06:42 +0000 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211208_020640_464200_A0B51900 X-CRM114-Status: UNSURE ( 9.61 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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,