Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 15 Apr 2002 15:11:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 15 Apr 2002 15:11:54 -0400 Received: from zikova.cvut.cz ([147.32.235.100]:51468 "EHLO zikova.cvut.cz") by vger.kernel.org with ESMTP id ; Mon, 15 Apr 2002 15:11:53 -0400 From: "Petr Vandrovec" Organization: CC CTU Prague To: Jens Axboe Date: Mon, 15 Apr 2002 21:11:34 +0200 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: [PATCH] IDE TCQ #4 CC: linux-kernel@vger.kernel.org X-mailer: Pegasus Mail v3.50 Message-ID: <276280417F3@vcnet.vc.cvut.cz> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 15 Apr 02 at 21:00, Jens Axboe wrote: > > > > NULL pointer ... > > Could you decode that? It doesn't look like any of your drives support > TCQ, it should have enabled them right here: They were already decoded... Also others reported that - after accessing /proc/ide/ide0/hda/identify system dies... I believe that passing hand-created request to ide_raw_taskfile corrupts drive->free_req, and so subsequent drive command after this cat finds that drive->free_req.next is NULL and dies. > > Uniform Multi-Platform E-IDE driver ver.:7.0.0 > > ide: system bus speed 33MHz > > VIA Technologies, Inc. Bus Master IDE: IDE controller on PCI slot 00:07.1 > > VIA Technologies, Inc. Bus Master IDE: chipset revision 16 > > VIA Technologies, Inc. Bus Master IDE: not 100%% native mode: will probe irqs later > > VP_IDE: VIA vt82c686a (rev 22) IDE UDMA66 controller on pci00:07.1 > > ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:pio > > ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:pio > > hda: WDC WD1200JB-00CRA0, ATA DISK drive > > hdc: TOSHIBA MK6409MAV, ATA DISK drive > > ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 > > ide1 at 0x170-0x177,0x376 on irq 15 > > ide: unexpected interrupt > > hda: tagged command queueing enabled, command queue depth 8 > > is missing, TCQ is not supported on this drive. I expected that too, but I thought that unexpected interrupt may have something related with this. Strange. I'll try to find some better identify parser than my eyes. Petr Vandrovec vandrove@vc.cvut.cz - 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/