Re: [Xenomai] GPIO irq handler on powerpc.

[Philippe Gerum <rpm@xenomai.org>]

On 06/08/2012 05:18 PM, Chris Stone wrote:
> I am not using a 3.2.x kernel. It was not a vendor specific tree, but
> a mainline 3.0.13 kernel.

Ok, so this moved to drivers/gpio. Patch queued, thanks.

>
> Cheers,
>      Chris.
>
>> -----Original Message-----
>> From: Philippe Gerum [mailto:rpm@xenomai.org]
>> Sent: Friday, June 08, 2012 11:14 AM
>> To: Chris Stone
>> Cc: xenomai@xenomai.org
>> Subject: Re: [Xenomai] GPIO irq handler on powerpc.
>>
>> On 06/08/2012 04:50 PM, Chris Stone wrote:
>>
>>> There was a call to generic_handle_irq that should have been calling
>>> ipipe_handle_chained_irq so I have a fix for the problem. Here is a
>>> diff:
>>>
>>> diff -r 0f7a4ec77dc0 arch/powerpc/sysdev/mpc8xxx_gpio.c
>>> --- a/arch/powerpc/sysdev/mpc8xxx_gpio.c        Mon Jun 04 11:04:14
>> 2012 -0400
>>> +++ b/arch/powerpc/sysdev/mpc8xxx_gpio.c        Fri Jun 08 10:39:40
>> 2012 -0400
>>> @@ -151,7 +151,7 @@
>>>
>>>           mask = in_be32(mm->regs + GPIO_IER)&   in_be32(mm->regs +
>> GPIO_IMR);
>>>           if (mask)
>>> -               generic_handle_irq(irq_linear_revmap(mpc8xxx_gc->irq,
>>> +
>>> + ipipe_handle_chained_irq(irq_linear_revmap(mpc8xxx_gc->irq,
>>>                                                        32 -
>> ffs(mask)));
>>>    }
>>>
>>> I did not see this in the core-3.2 branch of the ipipe git, so you
>> may
>>> need to merge this in. Let me know if I should be providing this fix
>> in another form.
>>>
>>
>> This won't apply to a mainline 3.2.x kernel. Are these bits part of a
>> vendor-specific tree?
>>
>> --
>> Philippe.
>


-- 
Philippe.