linux-kernel - Re: [patch 07/16] genirq: Introduce helper irq_domain_set

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Message-ID: <54648138.2070900@linux.intel.com>
Date:	Thu, 13 Nov 2014 18:00:24 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	Thomas Gleixner <tglx@...utronix.de>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Grant Likely <grant.likely@...aro.org>,
	Marc Zyngier <marc.zyngier@....com>,
	Yijing Wang <wangyijing@...wei.com>
Subject: Re: [patch 07/16] genirq: Introduce helper irq_domain_set_info()
 to reduce duplicated code

On 2014/11/13 17:57, Yingjoe Chen wrote:
> On Wed, 2014-11-12 at 13:43 +0000, Thomas Gleixner wrote:
>> Index: tip/kernel/irq/irqdomain.c
>> ===================================================================
>> --- tip.orig/kernel/irq/irqdomain.c
>> +++ tip/kernel/irq/irqdomain.c
>> @@ -882,6 +882,16 @@ int irq_domain_set_hwirq_and_chip(struct
>>  	return 0;
>>  }
>>  
>> +void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
>> +			 irq_hw_number_t hwirq, struct irq_chip *chip,
>> +			 void *chip_data, irq_flow_handler_t handler,
>> +			 void *handler_data, const char *handler_name)
>> +{
>> +	irq_domain_set_hwirq_and_chip(domain, virq, hwirq, chip, chip_data);
>> +	__irq_set_handler(virq, handler, 0, handler_name);
>> +	irq_set_handler_data(virq, handler_data);
>> +}
>> +
> 
> Hi,
> 
> While trying to use this function, I'm not sure about its interface.
> This function have 8 parameters but only save 3 function calls. After
> checking uses in Jiang's original patch, I think this make code harder
> to understand.
Hi Joe,
	It's true, but we also want to reduce duplicated code:(
Regards!
Gerry
> 
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