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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 30F66C433EF for ; Mon, 29 Nov 2021 18:36:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1379036AbhK2Sje (ORCPT ); Mon, 29 Nov 2021 13:39:34 -0500 Received: from ams.source.kernel.org ([145.40.68.75]:42250 "EHLO ams.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1378594AbhK2Shd (ORCPT ); Mon, 29 Nov 2021 13:37:33 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 38CA3B815DD; Mon, 29 Nov 2021 18:34:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5620EC53FAD; Mon, 29 Nov 2021 18:34:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1638210852; bh=ifJp1A4joxMqI8BzSIDLgJ1AH24pBipRR+hTi0ZkCRI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ihp/9NGm41dk5Ha2lVfsBELCegPvAqapYQSFr3Zjcu/HLrdFmziXLXxXn7zZ238vl 4jyOtZr0mtqm7m2rYLQzAGr1u/vQwlu7RGFI/ppNXP4aVAwBoW5rBG7XMUDVtptfB7 vqA1Mi6rJlDlPIzOWl/5Xph5Od2iHDP8rxfHgLu4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nicolas Chauvet , Thierry Reding , Dmitry Osipenko , Thomas Graichen Subject: [PATCH 5.15 018/179] usb: xhci: tegra: Check padctrl interrupt presence in device tree Date: Mon, 29 Nov 2021 19:16:52 +0100 Message-Id: <20211129181719.549470457@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20211129181718.913038547@linuxfoundation.org> References: <20211129181718.913038547@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: stable@vger.kernel.org From: Dmitry Osipenko commit 51f2246158f686c881859f4b620f831f06e296e1 upstream. Older device-trees don't specify padctrl interrupt and xhci-tegra driver now fails to probe with -EINVAL using those device-trees. Check interrupt presence and keep runtime PM disabled if it's missing to fix the trouble. Fixes: 971ee247060d ("usb: xhci: tegra: Enable ELPG for runtime/system PM") Cc: # 5.14+ Reported-by: Nicolas Chauvet Tested-by: Nicolas Chauvet # T124 TK1 Tested-by: Thomas Graichen # T124 Nyan Big Tested-by: Thierry Reding # Tegra CI Acked-by: Thierry Reding Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20211107224455.10359-1-digetx@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-tegra.c | 41 +++++++++++++++++++++++++++++------------ 1 file changed, 29 insertions(+), 12 deletions(-) --- a/drivers/usb/host/xhci-tegra.c +++ b/drivers/usb/host/xhci-tegra.c @@ -1400,6 +1400,7 @@ static void tegra_xusb_deinit_usb_phy(st static int tegra_xusb_probe(struct platform_device *pdev) { + struct of_phandle_args args; struct tegra_xusb *tegra; struct device_node *np; struct resource *regs; @@ -1454,10 +1455,17 @@ static int tegra_xusb_probe(struct platf goto put_padctl; } - tegra->padctl_irq = of_irq_get(np, 0); - if (tegra->padctl_irq <= 0) { - err = (tegra->padctl_irq == 0) ? -ENODEV : tegra->padctl_irq; - goto put_padctl; + /* Older device-trees don't have padctrl interrupt */ + err = of_irq_parse_one(np, 0, &args); + if (!err) { + tegra->padctl_irq = of_irq_get(np, 0); + if (tegra->padctl_irq <= 0) { + err = (tegra->padctl_irq == 0) ? -ENODEV : tegra->padctl_irq; + goto put_padctl; + } + } else { + dev_dbg(&pdev->dev, + "%pOF is missing an interrupt, disabling PM support\n", np); } tegra->host_clk = devm_clk_get(&pdev->dev, "xusb_host"); @@ -1696,11 +1704,15 @@ static int tegra_xusb_probe(struct platf goto remove_usb3; } - err = devm_request_threaded_irq(&pdev->dev, tegra->padctl_irq, NULL, tegra_xusb_padctl_irq, - IRQF_ONESHOT, dev_name(&pdev->dev), tegra); - if (err < 0) { - dev_err(&pdev->dev, "failed to request padctl IRQ: %d\n", err); - goto remove_usb3; + if (tegra->padctl_irq) { + err = devm_request_threaded_irq(&pdev->dev, tegra->padctl_irq, + NULL, tegra_xusb_padctl_irq, + IRQF_ONESHOT, dev_name(&pdev->dev), + tegra); + if (err < 0) { + dev_err(&pdev->dev, "failed to request padctl IRQ: %d\n", err); + goto remove_usb3; + } } err = tegra_xusb_enable_firmware_messages(tegra); @@ -1718,13 +1730,16 @@ static int tegra_xusb_probe(struct platf /* Enable wake for both USB 2.0 and USB 3.0 roothubs */ device_init_wakeup(&tegra->hcd->self.root_hub->dev, true); device_init_wakeup(&xhci->shared_hcd->self.root_hub->dev, true); - device_init_wakeup(tegra->dev, true); pm_runtime_use_autosuspend(tegra->dev); pm_runtime_set_autosuspend_delay(tegra->dev, 2000); pm_runtime_mark_last_busy(tegra->dev); pm_runtime_set_active(tegra->dev); - pm_runtime_enable(tegra->dev); + + if (tegra->padctl_irq) { + device_init_wakeup(tegra->dev, true); + pm_runtime_enable(tegra->dev); + } return 0; @@ -1772,7 +1787,9 @@ static int tegra_xusb_remove(struct plat dma_free_coherent(&pdev->dev, tegra->fw.size, tegra->fw.virt, tegra->fw.phys); - pm_runtime_disable(&pdev->dev); + if (tegra->padctl_irq) + pm_runtime_disable(&pdev->dev); + pm_runtime_put(&pdev->dev); tegra_xusb_powergate_partitions(tegra);