linux-kernel - Re: irq 19: nobody cared

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Message-ID: <20081019040557.GA6337@goodmis.org>
Date:	Sun, 19 Oct 2008 00:05:57 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Chris Li <lkml@...isli.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: irq 19: nobody cared

On Fri, Sep 19, 2008 at 01:40:33PM -0700, Chris Li wrote:
> Hi,
> 
> I run into this irq nobody care problem on a dell vostro 200 machine.
> I test the latest git tree. The problem is there as well.
> I also update the BIOS to the latest version. Doesn't help either.
> 
> It seem the IRQ in question is shared between UHCI and SATA controller.
> So I am not sure it is a SATA problem or a USB problem.
> 
> usb 4-2: new full speed USB device using uhci_hcd and address 2
> irq 19: nobody cared (try booting with the "irqpoll" option)
> Pid: 427, comm: nash-hotplug Not tainted 2.6.27-rc6 #1
>  [<c045e3e0>] __report_bad_irq+0x2e/0x6f
>  [<c045e5ea>] note_interrupt+0x1c9/0x21b
>  [<c045db80>] ? handle_IRQ_event+0x2a/0x5a
>  [<c045eba8>] handle_fasteoi_irq+0x99/0xc0
>  [<c045eb0f>] ? handle_fasteoi_irq+0x0/0xc0
>  [<c04059d3>] do_IRQ+0x9a/0xc4
>  [<c0404467>] common_interrupt+0x23/0x28
>  [<c0403989>] ? sysenter_past_esp+0x3a/0x62
>  [<c0630000>] ? serial8250_probe+0x169/0x1c0
>  =======================
> 
> I attached the kernel config file, dmesg and /proc/interrupts.
> 
> Any suggestions? I am willing to try fancy patches.
> 

Hi Chris,

Do you still have this problem, without any "irqpoll" workarourd? If so,
can you boot with the "noapic" kernel command line parameter, and see if
that stops the warning?

Thanks,

-- Steve



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