Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755304Ab3FPPHi (ORCPT ); Sun, 16 Jun 2013 11:07:38 -0400 Received: from mail-ve0-f176.google.com ([209.85.128.176]:35736 "EHLO mail-ve0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755197Ab3FPPHh (ORCPT ); Sun, 16 Jun 2013 11:07:37 -0400 MIME-Version: 1.0 In-Reply-To: <9E3F9C2076C45D4783F09B90D5BE77CE16B4E6@BADWLRZ-SWMBX13.ads.mwn.de> References: <9E3F9C2076C45D4783F09B90D5BE77CE16B4E6@BADWLRZ-SWMBX13.ads.mwn.de> Date: Sun, 16 Jun 2013 23:07:36 +0800 Message-ID: Subject: Re: Questions about Runtime Power Management From: Ming Lei To: "Morales, Alejandra" Cc: "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 937 Lines: 26 On Mon, Jun 10, 2013 at 12:28 AM, Morales, Alejandra wrote: > - Is runtime power management supported by net devices? Currently, 'struct net_device' doesn't support runtime power management, and I submitted one patch to add the support for solving accessing suspended device by 'ethtool', but it was rejected. http://marc.info/?t=135054860600003&r=1&w=2 But the physical device of the net device can support runtime PM, for example, some PCIe network devices support runtime PM on link change, and usbnet devices support auto suspend. Generally, the physical device is the parent of the net device, which is a class device. Thanks, -- Ming Lei -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/