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 D6805C433E2 for ; Mon, 29 Jun 2020 19:01:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B58A82053B for ; Mon, 29 Jun 2020 19:01:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593457273; bh=R6p6CPvab4qXGoi74cHq70AKz/fSLbmbm+2atUmsmYw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=p8ukfp8PE/FyRZX9NJHoNXTkYyPzQHZY/KkGpuvbuKa/7HXWpGm2CCEaPbN9w20o3 22u21hUpNzlaqG338v2YiKWDVzrs5vAFosAV7bQT5wmn8so7IhbCylgBfzMaWKF1wI WpkgU4mczX0P9sZb2JnIZplAIbnD7Ol1KWtZmj40= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728942AbgF2TBM (ORCPT ); Mon, 29 Jun 2020 15:01:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:45460 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730360AbgF2TAW (ORCPT ); Mon, 29 Jun 2020 15:00:22 -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 E65A32553B; Mon, 29 Jun 2020 15:55:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593446103; bh=R6p6CPvab4qXGoi74cHq70AKz/fSLbmbm+2atUmsmYw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RrECYSAK6AWbWmWSVhdBjC1FayZ3jOKoewA4k1CR6+EodIGXwOpVA64PGadrjxIra 7oNF38brfp31L/HQj8mPP372zL5KhwbAcuSY10UzMVUEveQVUTW3fIUZGJkKFWlmt7 iqwH/cizEfKRiAkNKZmgzVWCUdTbKoADOh+1BxkI= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Minas Harutyunyan , kbuild test robot , Marek Vasut , Minas Harutyunyan , Greg Kroah-Hartman Subject: [PATCH 4.4 095/135] usb: dwc2: Postponed gadget registration to the udc class driver Date: Mon, 29 Jun 2020 11:52:29 -0400 Message-Id: <20200629155309.2495516-96-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200629155309.2495516-1-sashal@kernel.org> References: <20200629155309.2495516-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.4.229-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-4.4.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 4.4.229-rc1 X-KernelTest-Deadline: 2020-07-01T15:53+00:00 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: Minas Harutyunyan commit 207324a321a866401b098cadf19e4a2dd6584622 upstream. During dwc2 driver probe, after gadget registration to the udc class driver, if exist any builtin function driver it immediately bound to dwc2 and after init host side (dwc2_hcd_init()) stucked in host mode. Patch postpone gadget registration after host side initialization done. Fixes: 117777b2c3bb9 ("usb: dwc2: Move gadget probe function into platform code") Reported-by: kbuild test robot Tested-by: Marek Vasut Cc: stable Signed-off-by: Minas Harutyunyan Link: https://lore.kernel.org/r/f21cb38fecc72a230b86155d94c7e60c9cb66f58.1591690938.git.hminas@synopsys.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/gadget.c | 6 ------ drivers/usb/dwc2/platform.c | 11 +++++++++++ 2 files changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 842c1ae7a2911..e5ad717cba22f 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3656,12 +3656,6 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) epnum, 0); } - ret = usb_add_gadget_udc(dev, &hsotg->gadget); - if (ret) { - dwc2_hsotg_ep_free_request(&hsotg->eps_out[0]->ep, - hsotg->ctrl_req); - return ret; - } dwc2_hsotg_dump(hsotg); return 0; diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 39c1cbf0e75d9..5e554b1d5a8f9 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -452,6 +452,17 @@ static int dwc2_driver_probe(struct platform_device *dev) if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) dwc2_lowlevel_hw_disable(hsotg); +#if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \ + IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) + /* Postponed adding a new gadget to the udc class driver list */ + if (hsotg->gadget_enabled) { + retval = usb_add_gadget_udc(hsotg->dev, &hsotg->gadget); + if (retval) { + dwc2_hsotg_remove(hsotg); + goto error; + } + } +#endif /* CONFIG_USB_DWC2_PERIPHERAL || CONFIG_USB_DWC2_DUAL_ROLE */ return 0; error: -- 2.25.1