Re: [Xenomai] kernel configuration problems with ACPI

[Jan Kiszka <jan.kiszka@web.de>]

On 2013-02-26 19:39, Gilles Chanteperdrix wrote:
> On 02/26/2013 01:18 PM, Jan Kiszka wrote:
> 
>> On 2013-02-26 13:12, Gilles Chanteperdrix wrote:
>>> On 02/26/2013 11:01 AM, hahnchristopher@arcor.de wrote:
>>>
>>>> On 02/19/2013 6:56 PM,  Gilles Chanteperdrix wrote:
>>>>> On 02/19/2013 01:52 PM, Christopher Hahn wrote:
>>>>>
>>>>>> Do you have any idea how to solve the problem?
>>>>>> Even if the system receives interrupts at IRQ 4, the program doesn't 
>>>>>> receive any message from the serial port with this kernel configuration.
>>>>>
>>>>>
>>>>> Trying to register the irq handler as level instead of edge?
>>>>>
>>>>> -- 
>>>>>                                                                 Gilles.
>>>>>
>>>>
>>>> I removed the 'RTDM_IRQTYPE_EDGE' from ksrc/drivers/serial/16550A.c at line 123.
>>>>
>>>> Now I get 'Xenomai: xnintr_shirq_handler: IRQ4 not handled. Disabling IRQ line.'
>>>
>>>
>>> Jan, any idea?
>>
>> Not really. If there is an IRQ and the UART says "not for me", either
>> the UART is buggy or someone else injects on that line.
> 
> 
> Or we are handling the irq as edge triggered whereas it is level
> triggered. Is not there an RTDM_IRQTYPE_LEVEL instead of RTDM_IRQTYPE_EDGE?

Level is default, ie. the absence of EDGE will choose it.

I noticed that the kernel considers this line level triggered. It's
unusual. Still, the change above should have solved it then if that was
the problem. I-pipe picks up the type from Linux, thus should mask&ack
the line properly. RTDM_IRQTYPE_EDGE just avoids loosing edge events by
selecting the shirq_handler.

Jan


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