From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Lord Subject: Re: Linux 2.6.17: IRQ handler mismatch in serial code? Date: Mon, 19 Jun 2006 15:45:06 -0400 Message-ID: <4496FEC2.8050903@rtr.ca> References: <20060619180658.58945.qmail@web52908.mail.yahoo.com> <20060619184706.GH3479@flint.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from rtr.ca ([64.26.128.89]:45232 "EHLO mail.rtr.ca") by vger.kernel.org with ESMTP id S964866AbWFSTpI (ORCPT ); Mon, 19 Jun 2006 15:45:08 -0400 In-Reply-To: <20060619184706.GH3479@flint.arm.linux.org.uk> Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: Chris Rankin , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org Russell King wrote: > > This seems to be an invalid situation - you appear to have an _ISA_ > NE2000 card using IRQ3, trying to share the same interrupt as a > serial port. > > ISA interrupts aren't sharable without additional hardware support > or specific software support in the Linux kernel interrupt > architecture. If the drivers are written "correctly", they shouldn't grab the IRQ until someone actually opens the device. Which means they should be able the share the IRQ, so long as both devices are not in use (open) at the same time. Cheers