linux-kernel - Re: [PATCH v2 3/6] genirq: introduce irq_chip_set_type

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Date:	Thu, 13 Aug 2015 12:54:36 +0300
From:	Grygorii Strashko <grygorii.strashko@...com>
To:	Sudeep Holla <sudeep.holla@....com>,
	Marc Zyngier <Marc.Zyngier@....com>
CC:	"tglx@...utronix.de" <tglx@...utronix.de>,
	"tony@...mide.com" <tony@...mide.com>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"jason@...edaemon.net" <jason@...edaemon.net>,
	"nsekhar@...com" <nsekhar@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"balbi@...com" <balbi@...com>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 3/6] genirq: introduce irq_chip_set_type_parent() helper

On 08/13/2015 11:58 AM, Sudeep Holla wrote:
>
>
> On 12/08/15 18:45, Grygorii Strashko wrote:
>> It's expected to use this helper when the current
>> domain doesn't implement .irq_set_type(),  but expect
>> the parent to do so.
>>
>> Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
>> ---
>>   include/linux/irq.h |  1 +
>>   kernel/irq/chip.c   | 20 ++++++++++++++++++++
>>   2 files changed, 21 insertions(+)
>>
>> diff --git a/include/linux/irq.h b/include/linux/irq.h
>> index 92188b0..51744bc 100644
>> --- a/include/linux/irq.h
>> +++ b/include/linux/irq.h
>> @@ -484,6 +484,7 @@ extern int irq_chip_set_affinity_parent(struct
>> irq_data *data,
>>   extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned
>> int on);
>>   extern int irq_chip_set_vcpu_affinity_parent(struct irq_data *data,
>>                            void *vcpu_info);
>> +extern int irq_chip_set_type_parent(struct irq_data *data, unsigned
>> int type);
>>   #endif
>>
>>   /* Handling of unhandled and spurious interrupts: */
>> diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
>> index bdb1b9d..b48938b 100644
>> --- a/kernel/irq/chip.c
>> +++ b/kernel/irq/chip.c
>> @@ -985,6 +985,26 @@ int irq_chip_set_affinity_parent(struct irq_data
>> *data,
>>   }
>>
>>   /**
>> + * irq_chip_set_type_parent - Set IRQ type on the parent interrupt
>> + * @data:    Pointer to interrupt specific data
>> + * @type:    IRQ_TYPE_{LEVEL,EDGE}_* value - see include/linux/irq.h
>> + *
>> + * Conditional, as the underlying parent chip might not implement it.
>> + */
>> +int irq_chip_set_type_parent(struct irq_data *data, unsigned int type)
>> +{
>> +    data = data->parent_data;
>> +
>> +    if (irq_data_get_irq_chip(data)->flags & IRQCHIP_SKIP_SET_WAKE)
>> +        return 0;
>> +
>
> I think this is unrelated here(perhaps copy-paste error ?). I fail to
> see how wakeup and trigger type are related.

Oh. Yes, it's copy-paste error. thanks, will fix.

-- 
regards,
-grygorii
--
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