linux-kernel - Re: [19.666764] Disabling IRQ #23

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Message-ID: <dd18b0c30809191819m39c4dfcbu22979daed9e94912@mail.gmail.com>
Date:	Fri, 19 Sep 2008 18:19:08 -0700
From:	"Justin Mattock" <justinmattock@...il.com>
To:	"David Brownell" <david-b@...bell.net>
Cc:	"Alan Stern" <stern@...land.harvard.edu>,
	"Bjorn Helgaas" <bjorn.helgaas@...com>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Yinghai Lu" <yhlu.kernel@...il.com>,
	"Chris Snook" <csnook@...hat.com>,
	Linux-usb <linux-usb@...r.kernel.org>
Subject: Re: [19.666764] Disabling IRQ #23

On Fri, Sep 19, 2008 at 5:56 PM, David Brownell <david-b@...bell.net> wrote:
> In
>
>  http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/gregkh-02-usb.current/
>
> the patch
>
>  usb-fix-ehci-periodic-transfers.patch
>
> seems like it should resolve the root cause of this, and
>
>  usb-ehci-fix-some-ehci-hangs-and-crashes.patch
>
> would cover symptoms which probably caused the "Disabling..." message.
> Both patches were in that LKML thread you referenced.
>

Cool, I did apply that patch and the periodic patch as well,
after doing so the system did not report any disable irq #23
message., but after running these two for a few days without
any issues I reverted. Then looking more into my situation,
I think ehci_hcd was getting confused with one usb device being
created by udev, and then a few seconds later another device with the
same numbers
created by hal(if thats how those two work), causing ehci_hcd to freak out.
in any case; applying the patch you had mentioned, as well
as the periodic patch did make ehci_hcd accept the two(if thats what
was happening).

regards;

-- 
Justin P. Mattock
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