From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755714Ab2EaKUb (ORCPT ); Thu, 31 May 2012 06:20:31 -0400 Received: from cantor2.suse.de ([195.135.220.15]:40889 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751203Ab2EaKUa (ORCPT ); Thu, 31 May 2012 06:20:30 -0400 From: Oliver Neukum Organization: SUSE To: Greg KH Subject: Re: [PATCH] add new NRP power meter USB device driver Date: Thu, 31 May 2012 12:17:11 +0200 User-Agent: KMail/1.13.5 (Linux/3.3.0-12-desktop+; KDE/4.4.4; x86_64; ; ) Cc: Stefani Seibold , linux-kernel@vger.kernel.org, thomas.braunstorfinger@rohde-schwarz.com References: <1338318858-24144-1-git-send-email-stefani@seibold.net> <1338454041.6454.67.camel@wall-e> <20120531095304.GA3884@kroah.com> In-Reply-To: <20120531095304.GA3884@kroah.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201205311217.11692.oneukum@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Donnerstag, 31. Mai 2012, 11:53:04 schrieb Greg KH: > > So it is a chicken and egg problem. A lot of software is now out with > > depends on this driver and a lot of embedded development environments > > doesn't provide libudev, libsysfs und libusb. It will also increase the > > size of the image and adds additional dependencies to the application. > > You don't need any of those libraries to do this. What's wrong with > using "raw" usbfs interactions? SPI is not limited to USB. If we can get a unified subsystem then the drivers need to be in kernel space, as some hardware does not allow a solution in user space. Regards Oliver