From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Christie Subject: Re: [PATCH 0/2] some block and scsi layer additions for ULD scatterlist code Date: Tue, 06 Dec 2005 19:49:35 -0600 Message-ID: <43963FAF.7090304@cs.wisc.edu> References: <1133771825.23619.16.camel@max> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.redhat.com ([66.187.233.31]:30340 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S1750832AbVLGBtq (ORCPT ); Tue, 6 Dec 2005 20:49:46 -0500 In-Reply-To: Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Yanggun Cc: axboe@suse.de, Linux SCSI list Yanggun wrote: > Hi, > > i am currently using linux kernel version 2.6.15-rc5 on x86 with Promise > SATAII150 TX2Plus(250G SATA HDD Disk x 2). > > But, SATA HDD disk does not become. program execute result of "fdisk > /dev/sda" is "Unable to read /dev/sda". > > Work well in linux kernel version 2.6.13.2. > > Do not act below since change as result that do debugging. > "[SCSI] use scatter lists for all block pc requests and > simplify hw handlers" > - http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=392160335c798bbe94ab3aae6ea0c85d32b81bbc > > > Test and tried your bug patch, but, result is same. I do not think my patch was meant to address your issue :( > > By result that I do debugging, if queuecommand () of LLD layer returns > result properly, but execute scsi_probe_lun () -> scsi_execute_req () > -> blk_execute_rq () by thing which is not realized to proc/scsi/scsi > come out . after execute blk_execute_rq(), then cmd->buffer, > cmd->request_buffer is NULL. so, "Model:" in scsi_add_lun() -> > print_inquiry() comes out NULL. I am not sure I understand correctly, but I do not think the analysis above is completely correct. scsi_execute_req gets a buffer passed to it so it should not matter if those fields are set to NULL when scsi_execute_req completes as long as something has been copied to the buffer passed into scsi_execute_req. > -------------- > Kernel version: 2.6.15-rc5 > SATA Controller: Promise SATAII150 TX2Plus > SATA HDD: Western Digital 250G x 2 > SATA Driver: http://www.promise.com/support/download/download2_eng.asp?productID=126&category=all&os=100# > I am not too familar with SATA. Is this driver in mainline and does it use libata? Which module is it?