Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262145AbTENHDY (ORCPT ); Wed, 14 May 2003 03:03:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262148AbTENHDX (ORCPT ); Wed, 14 May 2003 03:03:23 -0400 Received: from ns.virtualhost.dk ([195.184.98.160]:44419 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S262145AbTENHDU (ORCPT ); Wed, 14 May 2003 03:03:20 -0400 Date: Wed, 14 May 2003 09:15:58 +0200 From: Jens Axboe To: Jeff Garzik Cc: Dave Jones , "Mudama, Eric" , Oleg Drokin , Bartlomiej Zolnierkiewicz , Alan Cox , Oliver Neukum , lkhelp@rekl.yi.org, linux-kernel@vger.kernel.org Subject: Re: 2.5.69, IDE TCQ can't be enabled Message-ID: <20030514071558.GX17033@suse.de> References: <20030512193509.GB10089@gtf.org> <20030512194245.GG17033@suse.de> <20030512195331.GD10089@gtf.org> <20030513064059.GL17033@suse.de> <20030513180020.GB3309@suse.de> <20030513180334.GJ17033@suse.de> <20030513180459.GB11073@gtf.org> <20030513180651.GK17033@suse.de> <20030513181337.GM17033@suse.de> <20030513184205.GC11073@gtf.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030513184205.GC11073@gtf.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1276 Lines: 39 On Tue, May 13 2003, Jeff Garzik wrote: > On Tue, May 13, 2003 at 08:13:37PM +0200, Jens Axboe wrote: > > btw, you may want to see the IDE_TCQ_FIDDLE_SI define in ide-tcq, here's > > the comment I put there: > > > > /* > > * we are leaving the SERVICE interrupt alone, IBM drives have it > > * on per default and it can't be turned off. Doesn't matter, this > > * is the sane config. > > */ > > #undef IDE_TCQ_FIDDLE_SI > > > > Are you sure this isn't what you are seeing? > > > My information comes solely from IDENTIFY DEVICE... Maybe you shouldn't trust that, then :-) Seriously, I suppose it depends on the drive or maybe that IBM interprets the bits differently. This puppy: IC35L040AVVA07-0 says it doesn't support it either, but I can damn well assure you that it does. What it doesn't support (like other IBM's) is trying to change it, then it complains. So I'd be willing to bet lots of money that you drive generates service interrupts just fine. As I said, I've yet to see one that doesn't. -- Jens Axboe - 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/