From patchwork Wed Nov 20 20:21:50 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Hesselbarth X-Patchwork-Id: 292853 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 D0ED02C008F for ; Thu, 21 Nov 2013 07:22:35 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755215Ab3KTUWK (ORCPT ); Wed, 20 Nov 2013 15:22:10 -0500 Received: from mail-ee0-f45.google.com ([74.125.83.45]:36683 "EHLO mail-ee0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755149Ab3KTUWD (ORCPT ); Wed, 20 Nov 2013 15:22:03 -0500 Received: by mail-ee0-f45.google.com with SMTP id d49so4301706eek.4 for ; Wed, 20 Nov 2013 12:22:02 -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=LUTWI5jSgnwjU50t++cp6lpnLISKz5NgF5OWOGXyP2I=; b=qr815iBCXOp3g8o0lDxkRBQfrnglmXwHGBoKSCeFeXKihR5URSGQ9HVkqCcbqQiGWa PL9lIg+dpEyBe/RkdnXvZlvMPrsM8RFqld0VPFMgzEiAJWFknNLv5+qQgduaUj317ryh Hk+E7+qydbh+26PjtIfazwE8mkDS7mcmDYV5tMw1N5n1ihm+Qbr9FwGHboYUbb+UIcwV VgIlxmxOjxlvVqieg/2RSqFDOPFGnKAf1huV5OHHJWAhAr/DNGI5Ow1Smi1A6ZBtg/o1 9sd8aRX4Q8ZRLV41Ek7n+znUIJI4RFkrkPZctgKLF9XyD9O1P5/+R+koCFnVL68i0Bop fJCQ== X-Received: by 10.14.106.197 with SMTP id m45mr3278449eeg.45.1384978922184; Wed, 20 Nov 2013 12:22:02 -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 j46sm63391584eew.18.2013.11.20.12.22.00 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 20 Nov 2013 12:22:01 -0800 (PST) From: Sebastian Hesselbarth To: Sebastian Hesselbarth Cc: Sebastian Hesselbarth , "David S. Miller" , netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH RFC v1 4/7] net: phy: suspend unused PHYs on mdio_bus in late_initcall Date: Wed, 20 Nov 2013 21:21:50 +0100 Message-Id: <1384978913-8052-5-git-send-email-sebastian.hesselbarth@gmail.com> In-Reply-To: <1384978913-8052-1-git-send-email-sebastian.hesselbarth@gmail.com> References: <1384978913-8052-1-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 --- Cc: David S. Miller Cc: netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/net/phy/mdio_bus.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-) diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 5617876..10eba58 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -320,6 +320,33 @@ 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); + struct phy_device *phydev; + struct phy_driver *phydrv; + int i; + + for (i = 0; i < PHY_MAX_ADDR; i++) { + if (!bus->phy_map[i]) + continue; + + phydev = to_phy_device(&bus->phy_map[i]->dev); + phydrv = to_phy_driver(phydev->dev.driver); + if (!phydev->attached_dev && phydrv && phydrv->suspend) + phy_suspend(phydev); + } + + 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)