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,URIBL_BLOCKED,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 094BAC38A29 for ; Sat, 18 Apr 2020 14:52:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D6ADB20753 for ; Sat, 18 Apr 2020 14:52:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587221574; bh=4ZKCqnq3aMeP0p5bGe5j0lm2MElKEZ8zCA5qJu5O/l4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=gfGcGu9KB25v7pR2MRnNBWxQVI6WU9JAkshbVu63XadTiZKknBqdngw+BcH3cZ4tt wwN4LSQcZK9V0CqJhlacPvanGr3c/Mu+mOTkR7PEq5Mr81FjzRmLq3OK4N6Y17R9rD SWJc6mqLTG3GtNmUwFUXl6guiBGoWafd/okemzTg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729090AbgDROwy (ORCPT ); Sat, 18 Apr 2020 10:52:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:51966 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728253AbgDROmI (ORCPT ); Sat, 18 Apr 2020 10:42:08 -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 880D222202; Sat, 18 Apr 2020 14:42:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587220928; bh=4ZKCqnq3aMeP0p5bGe5j0lm2MElKEZ8zCA5qJu5O/l4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=f7KTMu79CWekh+DAPfy2BnLf61nmYvma36h/K6tdLjMKzLr8L5oLKYEk0IrH+H8LP MiFJnG1IpXt8aBKrZMpQG0skowd7qsqsFLSvtXWRRwViTYWa6zCe2ddJAb8X8Q/hNZ CnizLvcO4P91yMv9Q/JIg156rOXGhnKWmHgcSFxk= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mika Westerberg , Bjorn Helgaas , "Rafael J . Wysocki" , Sasha Levin , linux-pci@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 65/78] PCI/PM: Add pcie_wait_for_link_delay() Date: Sat, 18 Apr 2020 10:40:34 -0400 Message-Id: <20200418144047.9013-65-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200418144047.9013-1-sashal@kernel.org> References: <20200418144047.9013-1-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: Mika Westerberg [ Upstream commit 4827d63891b6a839dac49c6ab62e61c4b011c4f2 ] Add pcie_wait_for_link_delay(). Similar to pcie_wait_for_link() but allows passing custom activation delay in milliseconds. Link: https://lore.kernel.org/r/20191112091617.70282-2-mika.westerberg@linux.intel.com Signed-off-by: Mika Westerberg Signed-off-by: Bjorn Helgaas Reviewed-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/pci/pci.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 981ae16f935bc..94d6e120b4734 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -4605,14 +4605,17 @@ static int pci_pm_reset(struct pci_dev *dev, int probe) return pci_dev_wait(dev, "PM D3->D0", PCIE_RESET_READY_POLL_MS); } + /** - * pcie_wait_for_link - Wait until link is active or inactive + * pcie_wait_for_link_delay - Wait until link is active or inactive * @pdev: Bridge device * @active: waiting for active or inactive? + * @delay: Delay to wait after link has become active (in ms) * * Use this to wait till link becomes active or inactive. */ -bool pcie_wait_for_link(struct pci_dev *pdev, bool active) +static bool pcie_wait_for_link_delay(struct pci_dev *pdev, bool active, + int delay) { int timeout = 1000; bool ret; @@ -4649,13 +4652,25 @@ bool pcie_wait_for_link(struct pci_dev *pdev, bool active) timeout -= 10; } if (active && ret) - msleep(100); + msleep(delay); else if (ret != active) pci_info(pdev, "Data Link Layer Link Active not %s in 1000 msec\n", active ? "set" : "cleared"); return ret == active; } +/** + * pcie_wait_for_link - Wait until link is active or inactive + * @pdev: Bridge device + * @active: waiting for active or inactive? + * + * Use this to wait till link becomes active or inactive. + */ +bool pcie_wait_for_link(struct pci_dev *pdev, bool active) +{ + return pcie_wait_for_link_delay(pdev, active, 100); +} + void pci_reset_secondary_bus(struct pci_dev *dev) { u16 ctrl; -- 2.20.1