[PATCH] powerpc/ipic: Support edge on IRQ0

[Jürgen Schindele]

Index 48 equals IRQ0 in developpers manual


Am 26.06.2017 um 14:46 schrieb Michael Ellerman:
> Scott Wood <oss at buserror.net> writes:
>
>> External IRQ0 has the same capabilities as the other IRQ1-7 and is
>> handled by the same register IPIC_SEPNR.  When this register is not
>> specified for "ack" in "ipic_info", you cannot configure this IRQ as
>> IRQ_TYPE_EDGE_FALLING.  This oversight was probably due to the
>> non-contiguous hwirq numbering of IRQ0 in the IPIC.
> I don't know this code at all, but nothing in the diff says "IRQ0" to
> me?
>
> cheers
>
>> diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
>> index f267ee0afc08..16f1edd78c40 100644
>> --- a/arch/powerpc/sysdev/ipic.c
>> +++ b/arch/powerpc/sysdev/ipic.c
>> @@ -315,6 +315,7 @@ static struct ipic_info ipic_info[] = {
>>   		.prio_mask = 7,
>>   	},
>>   	[48] = {
>> +		.ack	= IPIC_SEPNR,
>>   		.mask	= IPIC_SEMSR,
>>   		.prio	= IPIC_SMPRR_A,
>>   		.force	= IPIC_SEFCR,
>> -- 
>> 2.11.0

-- 
  i. A.
Jürgen Schindele
Softwareentwicklung

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