Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S270742AbUJUPxy (ORCPT ); Thu, 21 Oct 2004 11:53:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S270698AbUJUPv7 (ORCPT ); Thu, 21 Oct 2004 11:51:59 -0400 Received: from math.ut.ee ([193.40.5.125]:13812 "EHLO math.ut.ee") by vger.kernel.org with ESMTP id S270736AbUJUPrY (ORCPT ); Thu, 21 Oct 2004 11:47:24 -0400 Date: Thu, 21 Oct 2004 18:47:13 +0300 (EEST) From: Meelis Roos To: Jens Axboe cc: Linux Kernel list Subject: Re: readcd hangs in blk_execute_rq In-Reply-To: <20041021154122.GC32465@suse.de> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1193 Lines: 34 > > And here it hangs. ps shows readcd is in D state, in blk_execute_rq. > > dmesg shows lines of > > > > hdc: lost interrupt Meanwhile I found out that if I eject the CD by pressing button, it resumes its work and reports error to the user process. > > ide-cd: cmd 0x28 timed out > > hdc: DMA interrupt recovery > > hdc: lost interrupt > > hdc: status timeout: status=0xd0 { Busy } > > hdc: status timeout: error=0x00 > > hdc: DMA disabled > > hdc: drive not ready for command > > hdc: ATAPI reset complete > > Did it previously work reliably with dma (which kernel)? Does it now > work reliably without dma now? Do send your entire dmesg after a boot > too, btw. It worked in earlier 2.4 kernels (2.4.18?) with DMA - I don't remember if it had some reliability problems. Since then, it's no dma. We have 3 such computers here (Intel D816EEA2 mainboard, this specific Sony CDrom) and they all behave the same. -- Meelis Roos (mroos@linux.ee) - 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/