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Date: Thu, 12 Jan 2006 10:53:21 -0500 (EST)
From: Alan Stern <stern@rowland.harvard.edu>
X-X-Sender: stern@iolanthe.rowland.org
To: Reuben Farrelly <reuben-lkml@reub.net>
cc: Andrew Morton <akpm@osdl.org>, <linux-kernel@vger.kernel.org>,
       <jgarzik@pobox.com>, Greg KH <greg@kroah.com>,
       <linux-usb-devel@lists.sourceforge.net>,
       Neil Brown <neilb@cse.unsw.edu.au>, <linux-acpi@vger.kernel.org>
Subject: Re: [linux-usb-devel] Re: 2.6.15-mm3 [USB lost interrupt bug]
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On Thu, 12 Jan 2006, Reuben Farrelly wrote:

> >> Initializing USB Mass Storage driver...
> >> irq 193: nobody cared (try booting with the "irqpoll" option)

> >> handlers:
> >> [<c027017e>] (usb_hcd_irq+0x0/0x56)
> >> Disabling IRQ #193
> > 
> > USB lost its interrupt.  Could be USB, more likely ACPI.
> 
> I've seen this one happen nearly every boot since then including bootups that 
> are otherwise OK (no oopses), so it's probably worth more looking into rather 
> than being written off as a 'once off':
> 
> uhci_hcd 0000:00:1d.3: Unlink after no-IRQ?  Controller is probably using the 
> wrong IRQ.

> It's a new regression to -mm3.

Did the same IRQ get assigned to that controller in earlier kernel 
versions?

Alan Stern

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