From patchwork Sun Dec 8 14:40:30 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Hesselbarth X-Patchwork-Id: 298829 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 36E9A2C0086 for ; Mon, 9 Dec 2013 01:41:21 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759450Ab3LHOk7 (ORCPT ); Sun, 8 Dec 2013 09:40:59 -0500 Received: from mail-ee0-f45.google.com ([74.125.83.45]:43504 "EHLO mail-ee0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759294Ab3LHOkl (ORCPT ); Sun, 8 Dec 2013 09:40:41 -0500 Received: by mail-ee0-f45.google.com with SMTP id d49so1071804eek.18 for ; Sun, 08 Dec 2013 06:40:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=FOiZsn972SO+7ZVee5gacRBbcaq4fSCspeRO53dhT8E=; b=RN8mF/3rs+EBcEy6zDYY+4BeN63PcE4QESzcTYKkSsbf9D3jNq29Hdy2OfSGKdPvZ5 P17RkWr9cUP2T7r9p9xI74D7AqHPWPOq0Rf6A2LDLJa1LaDLfgPr4oj88PzvOIvH/B5i nT4HWEt5kYS9ZQLOmuDvFSZME6ykswqILG+s9y38IHkzZQ4TxEYb1WTyCbt95LZx4SYE UTdruwmSeqCkc8UmqgCB8NtYbJrYYEC9Gs31xE7uQleAbeIVMdDcOuKZzne5Shhx5Jp3 gk00Hj1vlBEu8oZHt9okkEOCsyO6mWAKGUUxz0Pd9rurUJNtEpKeHQuXfA/OHGTBsVPA tJ+A== X-Received: by 10.14.251.68 with SMTP id a44mr9507302ees.64.1386513640188; Sun, 08 Dec 2013 06:40:40 -0800 (PST) Received: from topkick.lan (dslc-082-083-251-183.pools.arcor-ip.net. [82.83.251.183]) by mx.google.com with ESMTPSA id o47sm17852662eem.21.2013.12.08.06.40.38 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 08 Dec 2013 06:40:39 -0800 (PST) From: Sebastian Hesselbarth To: Sebastian Hesselbarth Cc: David Miller , Florian Fainelli , Mugunthan V N , netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 5/6] net: phy: suspend unused PHYs on mdio_bus in late_initcall Date: Sun, 8 Dec 2013 15:40:30 +0100 Message-Id: <1386513631-11284-6-git-send-email-sebastian.hesselbarth@gmail.com> In-Reply-To: <1386513631-11284-1-git-send-email-sebastian.hesselbarth@gmail.com> References: <1386171888-28190-1-git-send-email-sebastian.hesselbarth@gmail.com> <1386513631-11284-1-git-send-email-sebastian.hesselbarth@gmail.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Since phy_attach ensures PHYs are resumed, we can now suspend all PHYs that have no attached netdev after initcalls. Signed-off-by: Sebastian Hesselbarth Acked-by: Mugunthan V N Reviewed-by: Florian Fainelli --- Changelog: RFCv2->v1: - simplify phydev reference (Suggested by Sergei Shtylyov) Cc: David Miller Cc: Florian Fainelli Cc: Mugunthan V N Cc: netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/net/phy/mdio_bus.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 5617876..9ccf9c6 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -320,6 +320,29 @@ static int mdio_bus_match(struct device *dev, struct device_driver *drv) (phydev->phy_id & phydrv->phy_id_mask)); } +static int mdio_bus_suspend_unused(struct device *busdev, void *data) +{ + struct mii_bus *bus = to_mii_bus(busdev); + int i; + + for (i = 0; i < PHY_MAX_ADDR; i++) { + if (!bus->phy_map[i]) + continue; + + if (!bus->phy_map[i]->attached_dev) + phy_suspend(bus->phy_map[i]); + } + + return 0; +} + +static int mdio_bus_class_suspend_unused(void) +{ + return class_for_each_device(&mdio_bus_class, NULL, NULL, + mdio_bus_suspend_unused); +} +late_initcall_sync(mdio_bus_class_suspend_unused); + #ifdef CONFIG_PM static bool mdio_bus_phy_may_suspend(struct phy_device *phydev)