From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pat LaVarre <p.lavarre@ieee.org>
Subject: Re: [PATCH] atapi request sense work
Date: 02 Jun 2004 18:30:31 -0600
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To: Jeff Garzik <jgarzik@pobox.com>
Cc: linux-ide@vger.kernel.org

> From: Jeff Garzik ...
> till listening to you, though :)

Of course I stand ready to blog elsewhere if we prefer that.

Did the ata_check_bmdma patch reach you?

> atapi_sense_pio worked...
> immediately after op xA1 ATA_CMD_ID_ATAPI, ...
> [without] reference to struct ata_queued_cmd * qc.

If I try atapi_sense_pio near the ata_qc_complete source line:

        cmd->result = SAM_STAT_CHECK_CONDITION;

then still my kernel goes down after the message:

        ata_exec: ata2: cmd 0xA0

If I remember correctly, it doesn't even reach the message:

        ata_exec_command_pio: ata2: cmd 0xA0

Somehow, sometime after the op xA1 "IDENTIFY" completes, we switch into
a mode where provoking an extra interrupt by writing an extra command
from ata_host_intr halts me violently ...

Pat LaVarre