Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269818AbUJGMnH (ORCPT ); Thu, 7 Oct 2004 08:43:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269633AbUJGMbT (ORCPT ); Thu, 7 Oct 2004 08:31:19 -0400 Received: from mx1.redhat.com ([66.187.233.31]:16869 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S269812AbUJGMSK (ORCPT ); Thu, 7 Oct 2004 08:18:10 -0400 Date: Thu, 7 Oct 2004 14:17:41 +0200 From: Arjan van de Ven To: "Richard B. Johnson" Cc: Linux kernel Subject: Re: Probable module bug in linux-2.6.5-1.358 Message-ID: <20041007121741.GB23612@devserv.devel.redhat.com> References: <1097143144.2789.19.camel@laptop.fenrus.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1039 Lines: 24 On Thu, Oct 07, 2004 at 08:01:47AM -0400, Richard B. Johnson wrote: > Also, when this driver is running, transferring large volumes > of data, the kernel decides that there have been too many interrupts, and > does: > > Message from syslogd@chaos at Wed Oct 6 21:22:57 2004 ... > chaos kernel: Disabling IRQ #18 > > This, in spite of the fact that interrupts occur only when > DMA completion happens and new data are available, i.e., > one interrupt every 16 megabytes of data transferred. > > Who decided that it had a right to disable my interrupt???? the kernel did because you don't return the proper value for "I handled the IRQ" from your ISR. Also I don't see where you call cleanup_module(), the function that does the deregistration of the chardev... where do you call that ???? - 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/