From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755876Ab3AUU60 (ORCPT ); Mon, 21 Jan 2013 15:58:26 -0500 Received: from mail-da0-f51.google.com ([209.85.210.51]:39188 "EHLO mail-da0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752136Ab3AUU6Y (ORCPT ); Mon, 21 Jan 2013 15:58:24 -0500 Date: Mon, 21 Jan 2013 12:58:20 -0800 From: Greg Kroah-Hartman To: "Rafael J. Wysocki" Cc: ACPI Devel Maling List , LKML , "Kristen C. Accardi" , Len Brown Subject: Re: [RFC][Update 2][PATCH 3/4] sysfs: Functions for adding/removing symlinks to/from attribute groups Message-ID: <20130121205820.GC17006@kroah.com> References: <3307415.pdOY6ovZLa@vostro.rjw.lan> <2096792.ELJ8WGVaaz@vostro.rjw.lan> <4247313.2G7Z3nCgM0@vostro.rjw.lan> <7521411.VG2IjTvoWi@vostro.rjw.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7521411.VG2IjTvoWi@vostro.rjw.lan> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 21, 2013 at 02:06:27PM +0100, Rafael J. Wysocki wrote: > From: Rafael J. Wysocki > > The most convenient way to expose ACPI power resources lists of a > device is to put symbolic links to sysfs directories representing > those resources into special attribute groups in the device's sysfs > directory. For this purpose, it is necessary to be able to add > symbolic links to attribute groups. > > For this reason, add sysfs helper functions for adding/removing > symbolic links to/from attribute groups, sysfs_add_link_to_group() > and sysfs_remove_link_from_group(), respectively. Those functions are fine, but why sysfs_add_link()? It looks identical to sysfs_create_link(), why would you call one and not the other? Why would anything outside of the sysfs core code ever have a pointer to a sysfs_dirent? thanks, greg k-h