From mboxrd@z Thu Jan 1 00:00:00 1970 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=-19.4 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=unavailable 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 09531C2B9FB for ; Mon, 10 May 2021 11:20:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DE1C661042 for ; Mon, 10 May 2021 11:20:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238710AbhEJLSk (ORCPT ); Mon, 10 May 2021 07:18:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:52754 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233854AbhEJKzb (ORCPT ); Mon, 10 May 2021 06:55:31 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B923361C23; Mon, 10 May 2021 10:42:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620643367; bh=3Ufg7xo03ya1yrgPAz1RlfrVuRck0My3z2pCiLPXPmo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q/4/xoy8u3ESTpf9d2v0tKhByNZR4xqvp+/YhmX2JW8tety6mzGQUS0wB3mhPCFHr x6NodW/vxwHrQ5ekHpL+cp6QqsPCqAMLg6wMnN//WhjZLo8jDN42dqIE2UggrtPCHt w10d03OngnUsZG/TzqpF2sXke3NFNM+fGQ/9KhMU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Minas Harutyunyan , Artur Petrosyan Subject: [PATCH 5.10 287/299] usb: dwc2: Fix session request interrupt handler Date: Mon, 10 May 2021 12:21:24 +0200 Message-Id: <20210510102014.397584862@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210510102004.821838356@linuxfoundation.org> References: <20210510102004.821838356@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Artur Petrosyan commit 42b32b164acecd850edef010915a02418345a033 upstream. According to programming guide in host mode, port power must be turned on in session request interrupt handlers. Fixes: 21795c826a45 ("usb: dwc2: exit hibernation on session request") Cc: Acked-by: Minas Harutyunyan Signed-off-by: Artur Petrosyan Link: https://lore.kernel.org/r/20210408094550.75484A0094@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/core_intr.c | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -307,6 +307,7 @@ static void dwc2_handle_conn_id_status_c static void dwc2_handle_session_req_intr(struct dwc2_hsotg *hsotg) { int ret; + u32 hprt0; /* Clear interrupt */ dwc2_writel(hsotg, GINTSTS_SESSREQINT, GINTSTS); @@ -327,6 +328,13 @@ static void dwc2_handle_session_req_intr * established */ dwc2_hsotg_disconnect(hsotg); + } else { + /* Turn on the port power bit. */ + hprt0 = dwc2_read_hprt0(hsotg); + hprt0 |= HPRT0_PWR; + dwc2_writel(hsotg, hprt0, HPRT0); + /* Connect hcd after port power is set. */ + dwc2_hcd_connect(hsotg); } }