From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Hancock Subject: Re: SC1200 failure in 2.6.23 and 2.6.24-rc1-git10 Date: Wed, 07 Nov 2007 19:41:15 -0600 Message-ID: <4732693B.1070509@shaw.ca> References: Mime-Version: 1.0 Content-Type: text/plain; charset=KOI8-R; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from idcmail-mo1so.shaw.ca ([24.71.223.10]:34281 "EHLO pd4mo1so.prod.shaw.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750818AbXKHBlZ (ORCPT ); Wed, 7 Nov 2007 20:41:25 -0500 In-reply-to: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Denys Cc: linux-kernel@vger.kernel.org, ide Denys wrote: > Finally i got full DMESG with 1GB card till end. Seems not readable too. > .. > ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen > ata1.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 cdb 0x0 data 4096 in > res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) > ata1.00: status: { DRDY } > ata1: soft resetting link > ata1.00: configured for MWDMA1 > sd 0:0:0:0: [sda] Result: hostbyte=0x00 driverbyte=0x08 > sd 0:0:0:0: [sda] Sense Key : 0xb [current] [descriptor] > Descriptor sense data with sense descriptors (in hex): > 72 0b 00 00 00 00 00 0c 00 0a 80 00 00 00 00 00 > 00 00 00 00 > sd 0:0:0:0: [sda] ASC=0x0 ASCQ=0x0 > end_request: I/O error, dev sda, sector 0 > Buffer I/O error on device sda, logical block 0 > ata1: EH complete I'm guessing that your CF-to-IDE adapter doesn't have the correct lines wired up for DMA to work properly, and the card indicates DMA support, which libata tries to use but which doesn't work. It looks like it never tried falling back to PIO after DMA failed. Seems like a deficiency in the speed-down logic? -- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/