From patchwork Thu May 20 09:19:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 445705 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 40FE1C433ED for ; Thu, 20 May 2021 09:59:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2897061CBD for ; Thu, 20 May 2021 09:59:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234234AbhETKBP (ORCPT ); Thu, 20 May 2021 06:01:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:58746 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234882AbhETJ7O (ORCPT ); Thu, 20 May 2021 05:59:14 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2815F616ED; Thu, 20 May 2021 09:38:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621503515; bh=iLQUTeX6BCNFIMnrDZHpX2dwAoJ9qHYOjAiLV9akYFo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=emsxXbGTHV4jvYQW2yIf9nIxyiLDZzboKJieFxSYJhajXwLX1ON+c+cS9USxNhEdz wffv6fZwTZ5Ige7kYfxkZ9OQMFAAk6xSz/g2kvM8gMGTc0LdpLQpUyNIjJVoFJQzaq s7G7b/86E19JdJHM/T64Xiw12Lxtu/XEmx2Th/JU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Minas Harutyunyan , Artur Petrosyan , Sasha Levin Subject: [PATCH 4.19 222/425] usb: dwc2: Fix host mode hibernation exit with remote wakeup flow. Date: Thu, 20 May 2021 11:19:51 +0200 Message-Id: <20210520092138.717064634@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210520092131.308959589@linuxfoundation.org> References: <20210520092131.308959589@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Artur Petrosyan [ Upstream commit c2db8d7b9568b10e014af83b3c15e39929e3579e ] Added setting "port_connect_status_change" flag to "1" in order to re-enumerate, because after exit from hibernation port connection status is not detected. Fixes: c5c403dc4336 ("usb: dwc2: Add host/device hibernation functions") Acked-by: Minas Harutyunyan Signed-off-by: Artur Petrosyan Link: https://lore.kernel.org/r/20210416124707.5EEC2A005D@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/dwc2/hcd.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 91686e1b24d9..58e53e3d905b 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -5741,7 +5741,15 @@ int dwc2_host_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup, return ret; } - dwc2_hcd_rem_wakeup(hsotg); + if (rem_wakeup) { + dwc2_hcd_rem_wakeup(hsotg); + /* + * Change "port_connect_status_change" flag to re-enumerate, + * because after exit from hibernation port connection status + * is not detected. + */ + hsotg->flags.b.port_connect_status_change = 1; + } hsotg->hibernated = 0; hsotg->bus_suspended = 0;