From: Jan Sembera <fis@bofh.cz>
To: Robert Hancock <hancockrwd@gmail.com>
Cc: linux-ide@vger.kernel.org, mjg@redhat.com, holger@homac.de
Subject: Re: Regression between v3.5 and v3.6 in libata
Date: Wed, 27 Feb 2013 10:38:42 +0100 [thread overview]
Message-ID: <20130227093842.GA8208@abydos.bofh.cz> (raw)
In-Reply-To: <512DA957.1090600@gmail.com>
On Wed, Feb 27, 2013 at 12:36:07AM -0600, Robert Hancock wrote:
> On 02/26/2013 04:07 PM, Jan Sembera wrote:
> > So I apparently missed two most important differences between good and bad
> > boots.
> >
> > On Tue, Feb 26, 2013 at 09:03:48PM +0100, Jan Sembera wrote:
> >> [ 2.877438] scsi6 : pata_atiixp
> >> [ 2.881369] scsi7 : pata_atiixp
> >>
> >> [ 2.391535] scsi6 : pata_acpi
> >> [ 2.391994] scsi7 : pata_acpi
> >
> > pata-acpi doesn't play very well with this controller. Disabling it in
> > kernel and rebooting (even with 3.8) provided completely working kernel.
> > So either this driver shouldn't bind pata-acpi and leave it on pata-atiixp
> > as before (some kind of blacklisting needed?), or it needs some fixing to
> > work nicely with this controller.
> >
> > As a workaround for now, I'll just not compile PATA_ACPI into the kernel.
>
> What are your kernel config settings for these modules? The idea is that
> pata_acpi is only supposed to get loaded if no other driver is able to
> bind to the device.
This is based on a config that Ubuntu uses for building vanilla kernels and
has PATA_ACPI=y, PATA_ATIIXP=m. Which probably means that pata_acpi will
grab the controller before pata_atiixp has any chance to do so. Which is
probably bad and should be set to PATA_ACPI=m instead.
Should this also be treated as a bug in pata_acpi, or is it expected that
it's going to fail on some subset of motherboards/controllers and it's not
worth bothering with fixing it, especially if there is some other driver
that handles the controller fine?
next prev parent reply other threads:[~2013-02-27 9:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-26 20:03 Regression between v3.5 and v3.6 in libata Jan Sembera
2013-02-26 22:07 ` Jan Sembera
2013-02-27 6:36 ` Robert Hancock
2013-02-27 9:38 ` Jan Sembera [this message]
2013-02-27 12:42 ` Aaron Lu
2013-02-27 14:25 ` Jan Sembera
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