From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 21 Jun 2001 10:01:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 21 Jun 2001 10:01:30 -0400 Received: from mail3.noris.net ([62.128.1.28]:50089 "EHLO mail3.noris.net") by vger.kernel.org with ESMTP id ; Thu, 21 Jun 2001 10:01:17 -0400 Mime-Version: 1.0 Message-Id: In-Reply-To: <20010621235025.J30872@higherplane.net> In-Reply-To: <20010621235025.J30872@higherplane.net> Date: Thu, 21 Jun 2001 15:58:33 +0200 To: john slee , "Dmitry A. Fedorov" From: Matthias Urlichs Subject: Re: Is it useful to support user level drivers Cc: Balbir Singh , linux-kernel@vger.kernel.org Content-Type: text/plain; charset="us-ascii" ; format="flowed" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org At 23:50 +1000 2001-06-21, john slee wrote: >i believe libgpio uses the existing usb/iee1394/serial/parallel >interfaces to provide a limited userspace driver capability. That only means, however, that the specific kernel drivers explicitly support mid-level usermode access. They still handle the actual hardware state changes without usermode support. -- Matthias Urlichs