Re: [Patch V3 6/9] genirq: Introduce msi_domain_{alloc|free}_irqs()

[Jiang Liu]

On 2014/11/17 19:30, Thomas Gleixner wrote:
> On Mon, 17 Nov 2014, Jiang Liu wrote:
>> +
>> +/*
>> + * Default structure for MSI interrupt allocation.
>> + * Arch may overwrite it by defining msi_alloc_info_t.
>> + */
>> +struct msi_alloc_info {
>> +	struct msi_desc			*desc;
>> +	irq_hw_number_t			hwirq;
>> +	union {
>> +		unsigned long		ul;
>> +		void			*ptr;
>> +	} scratchpad[NUM_MSI_ALLOC_SCRATCHPAD_REGS];
>> +};
>> +
>> +#ifndef msi_alloc_info_t
>> +typedef struct msi_alloc_info msi_alloc_info_t;
>> +#endif
> 
> Hmm. Do we really need that?
Hi Thomas,
	Do you mean msi_alloc_info_t? It acts as a flag
to use common struct msi_alloc_info or architecture specific
data structures. For most architecture, they will use the default
struct msi_alloc_info. But for x86, it will use struct irq_alloc_info.
Regards!
Gerry
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