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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 D4705C433E0 for ; Thu, 18 Jun 2020 01:32:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9D12020FC3 for ; Thu, 18 Jun 2020 01:32:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592443938; bh=m7qh2UEs50QJzC+yg5qFJckGc++Rnx4/82DV1rGes14=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ck2FDn8PzXEPARVu1rrxQgIMDE7p0H8CnVPK3Es0wRPPWH5/jq6YqGW0SEv27whsv CbWUFjWCp70Ko3Hey9TLqzgztf4izavn1CDstMeaGj7Qfht7Ab7cZARaezzNKp2lES jn/67g2h8GXUtIqbxkOZHeIx7ENg7VQTNQk+d0Do= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731321AbgFRBcR (ORCPT ); Wed, 17 Jun 2020 21:32:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:39118 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730902AbgFRB3g (ORCPT ); Wed, 17 Jun 2020 21:29:36 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6288722241; Thu, 18 Jun 2020 01:29:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592443776; bh=m7qh2UEs50QJzC+yg5qFJckGc++Rnx4/82DV1rGes14=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PGDOelUdG/eNoDge0Ieu6NhUnfXcCIBjRNA21/gmH462kMDE/tAbXuiOO421XDV1B sOaPe0LZzKrMZq/jkoVDeCWkOy36uZEpnWyt7TUPCT0aX9xFno9GiS14qyvfi9/KnZ aRbb/x2LYzsTRoqI5p5fBhilTf7g6eO2+1FfY61M= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Fabrice Gasnier , Minas Harutyunyan , Felipe Balbi , Sasha Levin , linux-usb@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 59/80] usb: dwc2: gadget: move gadget resume after the core is in L0 state Date: Wed, 17 Jun 2020 21:27:58 -0400 Message-Id: <20200618012819.609778-59-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200618012819.609778-1-sashal@kernel.org> References: <20200618012819.609778-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Fabrice Gasnier [ Upstream commit 8c935deacebb8fac8f41378701eb79d12f3c2e2d ] When the remote wakeup interrupt is triggered, lx_state is resumed from L2 to L0 state. But when the gadget resume is called, lx_state is still L2. This prevents the resume callback to queue any request. Any attempt to queue a request from resume callback will result in: - "submit request only in active state" debug message to be issued - dwc2_hsotg_ep_queue() returns -EAGAIN Call the gadget resume routine after the core is in L0 state. Fixes: f81f46e1f530 ("usb: dwc2: implement hibernation during bus suspend/resume") Acked-by: Minas Harutyunyan Signed-off-by: Fabrice Gasnier Signed-off-by: Felipe Balbi Signed-off-by: Sasha Levin --- drivers/usb/dwc2/core_intr.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index d85c5c9f96c1..f046703f63f2 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -365,10 +365,13 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg) if (ret && (ret != -ENOTSUPP)) dev_err(hsotg->dev, "exit hibernation failed\n"); + /* Change to L0 state */ + hsotg->lx_state = DWC2_L0; call_gadget(hsotg, resume); + } else { + /* Change to L0 state */ + hsotg->lx_state = DWC2_L0; } - /* Change to L0 state */ - hsotg->lx_state = DWC2_L0; } else { if (hsotg->core_params->hibernation) return; -- 2.25.1