Update submodules

linux/内核-驱动/中断/硬中断--中断号映射.md

@@ -273,4 +273,48 @@ int irq_domain_associate(struct irq_domain *domain, unsigned int virq,
 
 	return 0;
 }
-```
+```
+
+# 完成硬件中断号到软件中断号的映射
+通过IRQ 中断号和 irq_domain获取struct irq_data 数据结构, 然后把硬件中断号 hwirq设置到 struct irq_data 数据结构中的hwirq 成员中, 这样就完成了硬件中断号到软件中断号的映射(！！！).
+```c
+/**
+ * irq_domain_set_info - Set the complete data for a @virq in @domain
+ * @domain:		Interrupt domain to match
+ * @virq:		IRQ number
+ * @hwirq:		The hardware interrupt number
+ * @chip:		The associated interrupt chip
+ * @chip_data:		The associated interrupt chip data
+ * @handler:		The interrupt flow handler
+ * @handler_data:	The interrupt flow handler data
+ * @handler_name:	The interrupt handler name
+ */
+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);
+}
+EXPORT_SYMBOL(irq_domain_set_info);
+
+[kernel/irq/irqdomain.c]
+int irq_domain_set_hwirq_and_chip(struct irq_domain *domain, unsigned int virq,
+				  irq_hw_number_t hwirq, struct irq_chip *chip,
+				  void *chip_data)
+{
+	struct irq_data *irq_data = irq_domain_get_irq_data(domain, virq);
+
+	if (!irq_data)
+		return -ENOENT;
+
+	irq_data->hwirq = hwirq;
+	irq_data->chip = chip ? chip : &no_irq_chip;
+	irq_data->chip_data = chip_data;
+
+	return 0;
+}
+
+```