From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: BUG in scsi_lib.c due to a bad commit Date: Mon, 24 Nov 2014 01:18:35 -0800 Message-ID: <20141124091835.GA21579@infradead.org> References: <20141120060933.GA21432@infradead.org> <546E2880.5070303@laposte.net> <20141120175316.GA19590@infradead.org> <546E32A5.4040202@laposte.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <546E32A5.4040202@laposte.net> Sender: linux-kernel-owner@vger.kernel.org To: Barto Cc: Christoph Hellwig , "Elliott, Robert (Server Storage)" , Guenter Roeck , linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org List-Id: linux-ide@vger.kernel.org On Thu, Nov 20, 2014 at 07:27:49PM +0100, Barto wrote: > but the sata DVD burner is now connected on a Jmicron sata PCIe card ( > with this configuration the bug doesn't occur ), I don't know if this > change can modify the result of your command, > > here is the result of another command : > > $ for i in /sys/class/scsi_host/*; do cat $i/proc_name; done > pata_jmicron > pata_jmicron > ata_piix > ata_piix > ata_piix > ata_piix > ahci > ahci Interesting. So the jmicron card also has a queue depth of just one, but the error still occurs? I've added the linux-ide list, maybe someone there has an idea how piix vs jmicron could have such different behaviors for queueing or error handling.