linux-kernel - Re: 2.6.20 libata cdrom

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20070501131818.GA18521@electro-mechanical.com>
Date:	Tue, 1 May 2007 09:18:18 -0400
From:	William Thompson <wt@...ctro-mechanical.com>
To:	Mark Lord <liml@....ca>
Cc:	Tejun Heo <htejun@...il.com>, linux-kernel@...r.kernel.org,
	IDE/ATA development list <linux-ide@...r.kernel.org>,
	albertcc@...ibm.com
Subject: Re: 2.6.20 libata cdrom

On Tue, May 01, 2007 at 09:04:46AM -0400, Mark Lord wrote:
> William Thompson wrote:
> >
> >+scsi2 : ata_piix
> >+ata_port_schedule_eh: port EH scheduled
> >+ata_scsi_error: ENTER
> >+ata_port_flush_task: ENTER
> >+ata_port_flush_task: flush #1
> >+ata2: ata_port_flush_task: flush #2
> >+ata2: ata_port_flush_task: EXIT
> >+ata_eh_autopsy: ENTER
> >+ata_eh_recover: ENTER
> >+ata_eh_prep_resume: ENTER
> >+ata_eh_prep_resume: EXIT
> >+__ata_port_freeze: ata2 port frozen
> >+ata_std_softreset: ENTER
> >+ata_std_softreset: about to softreset, devmask=1
> >+ata_bus_softreset: ata2: bus reset via SRST
> >+ata_dev_classify: found ATA device by sig
> >+ata_dev_classify: unknown device
> >+ata_std_softreset: EXIT, classes[0]=1 [1]=5
> >+ata_std_postreset: ENTER
> >+ata_std_postreset: EXIT
> >+ata_eh_thaw_port: ata2 port thawed
> >+ata_eh_revalidate_and_attach: ENTER
> >+ata2.00: ata_dev_read_id: ENTER, host 2, dev 0
> >+ata_exec_command_pio: ata2: cmd 0xEC
> >+ata_hsm_move: ata2: protocol 2 task_state 1 (dev_stat 0x51)
> >+ata_hsm_move: ata2: protocol 2 task_state 3 (dev_stat 0x51)
> >+ata_port_flush_task: ENTER
> >+ata_port_flush_task: flush #1
> >+ata2: ata_port_flush_task: flush #2
> >+ata2: ata_port_flush_task: EXIT
> >+ata2.00: failed to IDENTIFY (I/O error, err_mask=0x1)
> >+ata_eh_revalidate_and_attach: EXIT
> ..
> 
> Yep.  Libata seems to be treating the ATAPI drive as ATA.
> 
> Tejun, don't we have a fallback for when IDENTIFY fails?
> If the drive rejects it (err=0x04), then this can mean only one thing:
> unsupported command, so we next must try PACKET_IDENTIFY.

Is it doing that just for this drive?  I use libata on another machine (Dell
Dimension 2400) and it finds the cdrom just fine.

The one thing I do know, the machine with the non-working libata cdrom also
does not work with the ide driver *ONLY IF* DMA is turned on.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/