From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: [RFC]add ACPI hooks for IDE suspend/resume
Date: Wed, 07 Dec 2005 15:41:14 +0000
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To: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>, Shaohua Li <shaohua.li@intel.com>, linux-ide <linux-ide@vger.kernel.org>, lkml <linux-kernel@vger.kernel.org>, pavel <pavel@ucw.cz>, Len Brown <len.brown@intel.com>, akpm <akpm@osdl.org>

On Mer, 2005-12-07 at 15:45 +0100, Bartlomiej Zolnierkiewicz wrote:
> OK, I understand it now - when using 'ide-generic' host driver for IDE
> PCI device, resume fails (for obvious reason - IDE PCI device is not
> re-configured) and this patch fixes it through using ACPI methods.

Even in the piix case some devices need it because the bios wants to
issue commands such as password control if the laptop is set up in
secure modes.