Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269806AbUJGMl4 (ORCPT ); Thu, 7 Oct 2004 08:41:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269696AbUJGMb2 (ORCPT ); Thu, 7 Oct 2004 08:31:28 -0400 Received: from chaos.analogic.com ([204.178.40.224]:60806 "EHLO chaos.analogic.com") by vger.kernel.org with ESMTP id S269820AbUJGM1L (ORCPT ); Thu, 7 Oct 2004 08:27:11 -0400 Date: Thu, 7 Oct 2004 08:26:22 -0400 (EDT) From: "Richard B. Johnson" Reply-To: root@chaos.analogic.com To: Arjan van de Ven cc: Linux kernel Subject: Re: Probable module bug in linux-2.6.5-1.358 In-Reply-To: <20041007121741.GB23612@devserv.devel.redhat.com> Message-ID: References: <1097143144.2789.19.camel@laptop.fenrus.com> <20041007121741.GB23612@devserv.devel.redhat.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1446 Lines: 41 On Thu, 7 Oct 2004, Arjan van de Ven wrote: > 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. Do you know what that value is? I can't find it. I just returned 0 and it worked for awhile. > > Also I don't see where you call cleanup_module(), the function that does the > deregistration of the chardev... where do you call that ???? > The kernel calls cleanup_module() and the printk() shows that it was truly called. Cheers, Dick Johnson Penguin : Linux version 2.6.5-1.358-noreg on an i686 machine (5537.79 BogoMips). Note 96.31% of all statistics are fiction. - 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/