From patchwork Thu May 2 04:56:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Boichat X-Patchwork-Id: 10926003 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0736B912 for ; Thu, 2 May 2019 04:56:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EB5CB28FE3 for ; Thu, 2 May 2019 04:56:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DF39C28FE5; Thu, 2 May 2019 04:56:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 707AF28FE4 for ; Thu, 2 May 2019 04:56:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726194AbfEBE4k (ORCPT ); Thu, 2 May 2019 00:56:40 -0400 Received: from mail-pg1-f194.google.com ([209.85.215.194]:36359 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725616AbfEBE4j (ORCPT ); Thu, 2 May 2019 00:56:39 -0400 Received: by mail-pg1-f194.google.com with SMTP id 85so501654pgc.3 for ; Wed, 01 May 2019 21:56:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=0uEhbXfTbBJ1Z2Kv01LPBYrX3ZS5Rz9y5kPzobESOBI=; b=kjA0IkL2lphoYXjpaZd0JAuzOk4YKKTN2UCTNfqgYOGUz6zgSRQY1cyglpFLe9gZ1n GRnS9XNzri/D5ysNkPqqdDRMk3KRSwovN2qpgkhVkTiuhC4agg/NTutb4WuN47fVcZCF UUIO5robvSzsJ+u7sWK47XdnbhZImedX79T2Q= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=0uEhbXfTbBJ1Z2Kv01LPBYrX3ZS5Rz9y5kPzobESOBI=; b=D0yrRKbRryITS+KazTfZubDjtV4nsYmvGlFsPy0qnGduuYzCuKZ/XCFDIr1gzNBjnq XgnbzbJUE/KpVGHcvpOWAT9wjoi0dmqRQ/FBu5L5YTyVm6ezmBCwoXPS1tAJywE5h/OQ 8/kzlb9jX1gWHerjEVhhRWaSZRDouKMcV9tIliTUT1/i3cRcMIqUF93J1kdHdMN/gRGQ pO8xfmIjrdFNc94SKfQasIB5QsTjxWjUJkND56VW+HOYPKfQfCol7MxF76JNOi/4iNRR zD536BQ5Vrdc+jxUYghHIEYGwYfcsGUYdVtSu3IFo0z/3DfZfLY49B0B3eKf1rrqHVLo 6IAw== X-Gm-Message-State: APjAAAWJvUbHA1dYqhTRWmgDH4a9DBr0M2TL/r8dXV6CmBglihQHup0X BPxCT7aQsa0VPNH3R19Fpa1O7w== X-Google-Smtp-Source: APXvYqxb8f1zrcqX3NddJRYvEW77UkD+Um0XCa7fQsUuySsX73xUDBYJ7k8eUOzlL/onT4KImTFWUg== X-Received: by 2002:aa7:800e:: with SMTP id j14mr1786208pfi.157.1556772998334; Wed, 01 May 2019 21:56:38 -0700 (PDT) Received: from drinkcat2.tpe.corp.google.com ([2401:fa00:1:b:d8b7:33af:adcb:b648]) by smtp.gmail.com with ESMTPSA id a6sm64239470pfn.181.2019.05.01.21.56.36 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 01 May 2019 21:56:37 -0700 (PDT) From: Nicolas Boichat To: Greg Kroah-Hartman Cc: Mathias Nyman , Matthias Brugger , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Khuong Dinh , Hoan Tran Subject: [PATCH 2/2] usb: xhci-mtk: Do not create shared_hcd if no USB 3.0 port available Date: Thu, 2 May 2019 12:56:30 +0800 Message-Id: <20190502045631.229386-2-drinkcat@chromium.org> X-Mailer: git-send-email 2.21.0.593.g511ec345e18-goog In-Reply-To: <20190502045631.229386-1-drinkcat@chromium.org> References: <20190502045631.229386-1-drinkcat@chromium.org> MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When the controller only supports USB 2.0, do not even create the USB 3.0 hcd/root hub. Signed-off-by: Nicolas Boichat --- drivers/usb/host/xhci-mtk.c | 44 +++++++++++++++++++++++-------------- 1 file changed, 28 insertions(+), 16 deletions(-) diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index 026fe18972d3e5b..189f5dc614e6e05 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -527,23 +527,28 @@ static int xhci_mtk_probe(struct platform_device *pdev) xhci->imod_interval = 5000; device_property_read_u32(dev, "imod-interval-ns", &xhci->imod_interval); - xhci->shared_hcd = usb_create_shared_hcd(driver, dev, + /* Only create shared_hcd when USB3.0 port is available. */ + if (xhci->usb3_rhub.num_ports > 0) { + xhci->shared_hcd = usb_create_shared_hcd(driver, dev, dev_name(dev), hcd); - if (!xhci->shared_hcd) { - ret = -ENOMEM; - goto disable_device_wakeup; + if (!xhci->shared_hcd) { + ret = -ENOMEM; + goto disable_device_wakeup; + } } ret = usb_add_hcd(hcd, irq, IRQF_SHARED); if (ret) goto put_usb3_hcd; - if (HCC_MAX_PSA(xhci->hcc_params) >= 4) - xhci->shared_hcd->can_do_streams = 1; + if (xhci->usb3_rhub.num_ports > 0) { + if (HCC_MAX_PSA(xhci->hcc_params) >= 4) + xhci->shared_hcd->can_do_streams = 1; - ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED); - if (ret) - goto dealloc_usb2_hcd; + ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED); + if (ret) + goto dealloc_usb2_hcd; + } return 0; @@ -552,7 +557,8 @@ static int xhci_mtk_probe(struct platform_device *pdev) put_usb3_hcd: xhci_mtk_sch_exit(mtk); - usb_put_hcd(xhci->shared_hcd); + if (xhci->shared_hcd) + usb_put_hcd(xhci->shared_hcd); disable_device_wakeup: device_init_wakeup(dev, false); @@ -579,12 +585,14 @@ static int xhci_mtk_remove(struct platform_device *dev) struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct usb_hcd *shared_hcd = xhci->shared_hcd; - usb_remove_hcd(shared_hcd); + if (shared_hcd) + usb_remove_hcd(shared_hcd); xhci->shared_hcd = NULL; device_init_wakeup(&dev->dev, false); usb_remove_hcd(hcd); - usb_put_hcd(shared_hcd); + if (shared_hcd) + usb_put_hcd(shared_hcd); usb_put_hcd(hcd); xhci_mtk_sch_exit(mtk); xhci_mtk_clks_disable(mtk); @@ -611,8 +619,10 @@ static int __maybe_unused xhci_mtk_suspend(struct device *dev) xhci_dbg(xhci, "%s: stop port polling\n", __func__); clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); del_timer_sync(&hcd->rh_timer); - clear_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags); - del_timer_sync(&xhci->shared_hcd->rh_timer); + if (xhci->shared_hcd) { + clear_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags); + del_timer_sync(&xhci->shared_hcd->rh_timer); + } xhci_mtk_host_disable(mtk); xhci_mtk_clks_disable(mtk); @@ -631,8 +641,10 @@ static int __maybe_unused xhci_mtk_resume(struct device *dev) xhci_mtk_host_enable(mtk); xhci_dbg(xhci, "%s: restart port polling\n", __func__); - set_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags); - usb_hcd_poll_rh_status(xhci->shared_hcd); + if (xhci->shared_hcd) { + set_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags); + usb_hcd_poll_rh_status(xhci->shared_hcd); + } set_bit(HCD_FLAG_POLL_RH, &hcd->flags); usb_hcd_poll_rh_status(hcd); return 0;