From: Nate Lawson <nate@root.org>
To: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: acpi-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: [ACPI] IDE failure on ACPI resume
Date: Sun, 13 Mar 2005 20:53:59 -0800 [thread overview]
Message-ID: <423518E7.3030300@root.org> (raw)
In-Reply-To: <1110741241.8136.46.camel@tyrosine>
Matthew Garrett wrote:
> On resume, an HP nc6220 fails during resuming of the IDE devices. In
> this section of code from ide-iops.c:
>
> stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
> if ((stat & BUSY_STAT) == 0)
> return 0;
> /*
> * Assume a value of 0xff means nothing is connected to
> * the interface and it doesn't implement the pull-down
> * resistor on D7.
> */
> if (stat == 0xff)
> return -ENODEV;
>
> 0xff is read and ENODEV returned. This results in
Sounds like PCI not being completely restored. We had to work around
some weird ATA issues in FreeBSD with the status register being invalid
for quite a while after resume. A retry loop was the solution.
--
Nate
next prev parent reply other threads:[~2005-03-14 4:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-13 19:14 IDE failure on ACPI resume Matthew Garrett
2005-03-14 4:53 ` Nate Lawson [this message]
2005-03-17 15:10 ` [ACPI] " Matthew Garrett
2005-03-17 20:34 ` Nate Lawson
2005-03-18 0:02 ` Matthew Garrett
2005-03-18 0:08 ` Nate Lawson
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