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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 8AC83C43331 for ; Mon, 11 Nov 2019 19:07:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 56FBF204EC for ; Mon, 11 Nov 2019 19:07:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573499266; bh=ezdMpOZBc7nuvT/RQXHfOgSv42XWpVPhTvjDuhk/2xE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UIo14YyvrcbM7vButDpyY8xfnKKhbmy0Db6vPg9Ieda+qUD/8WBazog0xFeDQ1KAJ 24Yfth6+Us/2LxAZEPDRm7nLKmWFQHHFUhDHWnJndbdPvZo8nAKM/ECAjTXoitFiWq MEvINUw37TcelX2DarQDTFp/rWoiaMiZquAqydqQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728833AbfKKShP (ORCPT ); Mon, 11 Nov 2019 13:37:15 -0500 Received: from mail.kernel.org ([198.145.29.99]:55828 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727785AbfKKShL (ORCPT ); Mon, 11 Nov 2019 13:37:11 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1F2FB204FD; Mon, 11 Nov 2019 18:37:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573497430; bh=ezdMpOZBc7nuvT/RQXHfOgSv42XWpVPhTvjDuhk/2xE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uDYh4bgpExrGzK4CZtURnB5TsVNjdo4SiOJraKzZLOUk/Dh8ppPCarVboCsmc5kcJ bpXp50SEV7sMcsDaN9W9YBljy9XlgJ6lX1qzY3gt2dxsI9iv/8Ah58zQFpgA/TEp// dltixqhvFAR1QnnLHNu0s4nkmn3jXXSexSpN3BV0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Greg Kroah-Hartman , Keerthy , Bjorn Helgaas , Kishon Vijay Abraham I , Mathieu Poirier Subject: [PATCH 4.14 052/105] PCI: dra7xx: Add shutdown handler to cleanly turn off clocks Date: Mon, 11 Nov 2019 19:28:22 +0100 Message-Id: <20191111181443.084527801@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191111181421.390326245@linuxfoundation.org> References: <20191111181421.390326245@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Keerthy commit 9c049bea083fea21373b8baf51fe49acbe24e105 upstream Add shutdown handler to cleanly turn off clocks. This will help in cases of kexec where in a new kernel can boot abruptly. Signed-off-by: Keerthy Signed-off-by: Bjorn Helgaas Acked-by: Kishon Vijay Abraham I Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman --- drivers/pci/dwc/pci-dra7xx.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) --- a/drivers/pci/dwc/pci-dra7xx.c +++ b/drivers/pci/dwc/pci-dra7xx.c @@ -817,6 +817,22 @@ static int dra7xx_pcie_resume_noirq(stru } #endif +void dra7xx_pcie_shutdown(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct dra7xx_pcie *dra7xx = dev_get_drvdata(dev); + int ret; + + dra7xx_pcie_stop_link(dra7xx->pci); + + ret = pm_runtime_put_sync(dev); + if (ret < 0) + dev_dbg(dev, "pm_runtime_put_sync failed\n"); + + pm_runtime_disable(dev); + dra7xx_pcie_disable_phy(dra7xx); +} + static const struct dev_pm_ops dra7xx_pcie_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(dra7xx_pcie_suspend, dra7xx_pcie_resume) SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(dra7xx_pcie_suspend_noirq, @@ -830,5 +846,6 @@ static struct platform_driver dra7xx_pci .suppress_bind_attrs = true, .pm = &dra7xx_pcie_pm_ops, }, + .shutdown = dra7xx_pcie_shutdown, }; builtin_platform_driver_probe(dra7xx_pcie_driver, dra7xx_pcie_probe);