* @name: flow handler name for /proc/interrupts output
*/
struct irq_desc {
+ unsigned int irq;
+#ifdef CONFIG_HAVE_SPARSE_IRQ
+ struct irq_desc *next;
+#endif
irq_flow_handler_t handle_irq;
struct irq_chip *chip;
struct msi_desc *msi_desc;
const char *name;
} ____cacheline_internodealigned_in_smp;
-#ifdef CONFIG_HAVE_DYN_ARRAY
-extern struct irq_desc *irq_desc;
-#else
+extern struct irq_desc *irq_to_desc(unsigned int irq);
+#ifndef CONFIG_HAVE_DYN_ARRAY
+/* could be removed if we get rid of all irq_desc reference */
extern struct irq_desc irq_desc[NR_IRQS];
#endif
static inline int irq_balancing_disabled(unsigned int irq)
{
- return irq_desc[irq].status & IRQ_NO_BALANCING_MASK;
+ struct irq_desc *desc;
+
+ desc = irq_to_desc(irq);
+ return desc->status & IRQ_NO_BALANCING_MASK;
}
/* Handle irq action chains: */
*/
static inline void generic_handle_irq(unsigned int irq)
{
- struct irq_desc *desc = irq_desc + irq;
+ struct irq_desc *desc = irq_to_desc(irq);
#ifdef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
desc->handle_irq(irq, desc);
static inline void __set_irq_handler_unlocked(int irq,
irq_flow_handler_t handler)
{
- irq_desc[irq].handle_irq = handler;
+ struct irq_desc *desc;
+
+ desc = irq_to_desc(irq);
+ desc->handle_irq = handler;
}
/*
/* Test to see if a driver has successfully requested an irq */
static inline int irq_has_action(unsigned int irq)
{
- struct irq_desc *desc = irq_desc + irq;
+ struct irq_desc *desc = irq_to_desc(irq);
return desc->action != NULL;
}
extern int set_irq_type(unsigned int irq, unsigned int type);
extern int set_irq_msi(unsigned int irq, struct msi_desc *entry);
-#define get_irq_chip(irq) (irq_desc[irq].chip)
-#define get_irq_chip_data(irq) (irq_desc[irq].chip_data)
-#define get_irq_data(irq) (irq_desc[irq].handler_data)
-#define get_irq_msi(irq) (irq_desc[irq].msi_desc)
+#define get_irq_chip(irq) (irq_to_desc(irq)->chip)
+#define get_irq_chip_data(irq) (irq_to_desc(irq)->chip_data)
+#define get_irq_data(irq) (irq_to_desc(irq)->handler_data)
+#define get_irq_msi(irq) (irq_to_desc(irq)->msi_desc)
#endif /* CONFIG_GENERIC_HARDIRQS */