Date: Wed, 2 Oct 2002 21:55:27 +0100
From: jbradford@dial.pipex.com
Message-Id: <200210022055.g92KtRbV000226@darkstar.example.net>
To: linux-kernel@vger.kernel.org
Subject: 2.5.x fixes IDE sleep problems, (hdparm -Y), on PIIX3, (at least).
Cc: alan@lxorguk.ukuu.org.uk, cogwepeter@cogweb.net, davidsen@tmr.com,
       diegocg@teleline.es, mlord@pobox.com, padraig.brady@corvil.com
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 896
Lines: 21

We were discussing some time ago about IDE drives not waking up from a sleep command, (I.E. hdparm -Y as opposed to a standby, hdparm -y), and this is indeed true at least for a Maxtor drive on my PIIX3 chipset, running 2.4.19.

However, with 2.5.40 it _does_, (eventually, after about 20 seconds), reset the disk.  Here is the output of dmesg:

hda: dma_timer_expiry: dma status == 0x21
hda: timeout waiting for DMA
hda: timeout waiting for DMA
hda: (__ide_dma_test_irq) called while not waiting
hda: status timeout: status=0xd0 { Busy }

hda: drive not ready for command
ide0: reset: success

So, this seems to be fixed in the 2.5.X IDE code.

John.
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