Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751141AbWAYMuY (ORCPT ); Wed, 25 Jan 2006 07:50:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751158AbWAYMuY (ORCPT ); Wed, 25 Jan 2006 07:50:24 -0500 Received: from soohrt.org ([85.131.246.150]:41442 "EHLO quickstop.soohrt.org") by vger.kernel.org with ESMTP id S1751141AbWAYMuY convert rfc822-to-8bit (ORCPT ); Wed, 25 Jan 2006 07:50:24 -0500 Date: Wed, 25 Jan 2006 13:50:17 +0100 From: Horst Schirmeier To: Greg KH Cc: linux-kernel Subject: Re: udev/hotplug and automatic /dev node creation Message-ID: <20060125125017.GD10068@quickstop.soohrt.org> Mail-Followup-To: Greg KH , linux-kernel References: <20060118024710.GB26895@quickstop.soohrt.org> <20060118040718.GA6579@kroah.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: 8BIT In-Reply-To: <20060118040718.GA6579@kroah.com> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1446 Lines: 38 On Tue, 17 Jan 2006, Greg KH wrote: > On Wed, Jan 18, 2006 at 03:47:10AM +0100, Horst Schirmeier wrote: > > Hi, > > > > I'm looking for documentation regarding how to write a Linux kernel > > module that creates its own /dev node via udev/hotplug. > > register_chrdev() and a simple udev/rules.d/ entry don't seem to be > > sufficient... > > Yes, register_chrdev() will do nothing for udev. > > Take a look at the book, Linux Device Drivers, third edition (free > online). In the chapter about the driver model, there is a section > about what udev needs. The functions it says to use are no longer in > the kernel, but it should point you in the right direction (hint, use > class_device_create().) > > If you have a pointer to your code, I can probably knock out a patch for > you very quickly. Now I'm using class_create() and class_device_create() (together with class_device_destroy() and class_destroy()), which works fine on 2.6.15 and 2.6.16-rc1, and with some hackish LINUX_VERSION_CODE-checking #define wrapper around class_device_create() also on 2.6.13 and 2.6.14... But: Is there a common way to get this working on 2.6.12 or earlier? Kind regards, Horst -- PGP-Key 0xD40E0E7A - 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/