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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Tejun Heo <htejun@gmail.com>
Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org,
	htejun@gmail.com, alan@redhat.com, jeff@garzik.org
Subject: Re: [PATCH] libata: Forcing PIO0 mode on reset must not freeze system
Date: Mon, 11 Feb 2008 11:50:50 +0000	[thread overview]
Message-ID: <20080211115050.77feb1af@core> (raw)
In-Reply-To: <47AFB4DB.1000204@gmail.com>

> In the above example, even the reset sequence itself can cause hang if
> the hardware is implemented slightly differently.  The reason why
> set_piomode() locks up but reset sequence doesn't is simple dumb luck.
> I think the proper fix is to tell libata to detach the cdrom before
> undocking.

Just a thought but which ICH variant is this. For the older ones we have
to turn IORDY off in software before an eject and they cannot fully
support hot unplug

Alan


      parent reply	other threads:[~2008-02-11 11:59 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-10 19:55 Holger Macht
2008-02-11  2:37 ` Tejun Heo
2008-02-11 10:04   ` Holger Macht
2008-02-11 11:16     ` Tejun Heo
2008-02-11 11:28       ` Holger Macht
2008-02-11 13:11         ` Tejun Heo
2008-02-11 14:06           ` Holger Macht
2008-02-11 23:31             ` Tejun Heo
2008-02-14 12:42           ` Holger Macht
2008-02-11 11:25     ` Alan Cox
2008-02-11 10:29   ` Holger Macht
2008-02-11 10:49     ` Tejun Heo
2008-02-11 11:32     ` Alan Cox
2008-02-11 11:50   ` Alan Cox [this message]

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