Linux内核中断模块之中断芯片之附带数据描述

/** * struct irq_data - per irq chip data passed down to chip functions */struct irq_data { u32   mask; unsigned int  irq; unsigned long  hwirq; struct irq_common_data *common; struct irq_chip  *chip; struct irq_domain *domain;#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY struct irq_data  *parent_data;#endif void   *chip_data;};