Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261338AbTIBWvS (ORCPT ); Tue, 2 Sep 2003 18:51:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261351AbTIBWvS (ORCPT ); Tue, 2 Sep 2003 18:51:18 -0400 Received: from mta10.adelphia.net ([68.168.78.202]:16040 "EHLO mta10.adelphia.net") by vger.kernel.org with ESMTP id S261338AbTIBWvQ (ORCPT ); Tue, 2 Sep 2003 18:51:16 -0400 Message-ID: <002f01c371a4$b7207a00$6401a8c0@wa1hco> From: "jeff millar" To: "Andrey Borzenkov" Cc: References: Subject: Re: 2.6.0-test4, psmouse doesn't autoload, CONFIG_SERIO doesn't module Date: Tue, 2 Sep 2003 18:51:06 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="koi8-r" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2498 Lines: 64 From: "Andrey Borzenkov" > > 1. Why doesn't the PS/2 mouse autoload as a module? > > Running 2.6.0-test4, psmouse doesn't autoload as a module. Oddly, neither > > gpm nor X complains about the missing module, the mouse just doesn't work. > > But if I modprobe psmouse, the cursor starts moving. I verified that > > /dev/psaux uses char-major-10-1 and that it has an "alias char-major-10-1 > > psaux" in modprobe.conf. > > because in 2.6 user-level programs do not speak with low-level hardware > drivers anymore. psmouse feeds events to input midlayer that dispatches > them to those handlers that expressed interest. And those handlers speak > with user-level tools. > > /dev/psaux is an *emulated* ImPS mouse that is not related to any > real hardware. It will convert events from _any_ mouse you have into > PS/2 protocol for users but if there is no mouse it just sits there > and waits. > /dev/psaux is provided by mousemod not psmouse. > In general there seems to be no way to load low-level input drivers > on access because there is no instance that ever accesses them. And > as it stands now there is not way to auto-load using some other means. > So we are back in static configuration times ... Ok, I guess. But isn't there some module reference that can trigger the install of psmouse? > > 1. What does kmod send to modprobe? From looking at modprobe.conf apparently "char-major-x-y". > > only for misc devices. It is char-major-X for most others > > 2. Does kmod send any other strings to modprobe? > no. > > 3. Documentation/kmod.txt says "passing the name (to modprobe) that was > > requested", couldn't this be more explicit? > what exactly do you mean? Something like "...passing the name of the device in the form 'char-major-x-y' for misc devices and 'char-major-X' for others" BTW, could kmod just pass the name of the file from the open() call? Modprobe could look up the major-minor and/or users could create virtual devices. For example, I create a file /dev/my_psaux which is a symlink to /dev/psaux, the name gets passed to modprobe. modprobe looks it up and finds that it's not a device file and looks for an alias, and finds psmouse, loads it,...problem solved. thanks for the info, jeff - 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/