From: Sarah Sharp <sarah.a.sharp@linux.intel.com>
To: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: linux-usb@vger.kernel.org, linux-acpi@vger.kernel.org,
Len Brown <lenb@kernel.org>
Subject: Re: xHCI Express Card failure -- ACPI related?
Date: Wed, 23 Feb 2011 08:23:34 -0800 [thread overview]
Message-ID: <20110223162333.GA5660@xanatos> (raw)
In-Reply-To: <20110223150922.GA9304@srcf.ucam.org>
On Wed, Feb 23, 2011 at 03:09:22PM +0000, Matthew Garrett wrote:
> On Wed, Feb 23, 2011 at 06:57:47AM -0800, Sarah Sharp wrote:
> > On Wed, Feb 23, 2011 at 01:54:45AM +0000, Matthew Garrett wrote:
> > > On Tue, Feb 22, 2011 at 04:55:13PM -0800, Sarah Sharp wrote:
> > > > I'm having an issue with an xHCI (USB 3.0 host controller) Express Card.
> > > > This card works fine on 2.6.37, but on 2.6.38-rc5, when I plug in the
> > > > card, I get this output in dmesg:
> > >
> > > Is the controller associated with irq 23?
> >
> > I think it is, before the xHCI driver switches to MSI/MSIX. I'd have to
> > disable MSI in 2.6.37 to confirm.
>
> Mm. Sounds like it's the hardware generating a legacy IRQ after you've
> changed to MSI? Any chance this could be related to the irq
> synchronisation patches?
Could be related, but I'm not sure that's the issue. I don't see any
messages at all from the xHCI driver or the USB core about the new host
before the "nobody cared" message appears (although it turned out I have
CONFIG_USB_XHCI_HCD_DEBUGGING turned off). AFAICT, the driver never
gets loaded. But if the xHCI driver failed in its init sequence...
I'll check.
Sarah Sharp
prev parent reply other threads:[~2011-02-23 16:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-23 0:55 xHCI Express Card failure -- ACPI related? Sarah Sharp
2011-02-23 1:54 ` Matthew Garrett
[not found] ` <20110223015445.GA27481-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2011-02-23 14:57 ` Sarah Sharp
2011-02-23 15:09 ` Matthew Garrett
2011-02-23 16:23 ` Sarah Sharp [this message]
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