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-rw-r--r--include/linux/irq.h18
-rw-r--r--kernel/irq/generic-chip.c16
2 files changed, 21 insertions, 13 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h
index b52424eaa0ed..603986741f2c 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -916,12 +916,20 @@ void irq_remove_generic_chip(struct irq_chip_generic *gc, u32 msk,
unsigned int clr, unsigned int set);
struct irq_chip_generic *irq_get_domain_generic_chip(struct irq_domain *d, unsigned int hw_irq);
-int irq_alloc_domain_generic_chips(struct irq_domain *d, int irqs_per_chip,
- int num_ct, const char *name,
- irq_flow_handler_t handler,
- unsigned int clr, unsigned int set,
- enum irq_gc_flags flags);
+int __irq_alloc_domain_generic_chips(struct irq_domain *d, int irqs_per_chip,
+ int num_ct, const char *name,
+ irq_flow_handler_t handler,
+ unsigned int clr, unsigned int set,
+ enum irq_gc_flags flags);
+
+#define irq_alloc_domain_generic_chips(d, irqs_per_chip, num_ct, name, \
+ handler, clr, set, flags) \
+({ \
+ MAYBE_BUILD_BUG_ON(irqs_per_chip > 32); \
+ __irq_alloc_domain_generic_chips(d, irqs_per_chip, num_ct, name,\
+ handler, clr, set, flags); \
+})
static inline struct irq_chip_type *irq_data_get_chip_type(struct irq_data *d)
{
diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c
index a3a392097804..ee32870079c9 100644
--- a/kernel/irq/generic-chip.c
+++ b/kernel/irq/generic-chip.c
@@ -260,9 +260,9 @@ irq_gc_init_mask_cache(struct irq_chip_generic *gc, enum irq_gc_flags flags)
}
/**
- * irq_alloc_domain_generic_chip - Allocate generic chips for an irq domain
+ * __irq_alloc_domain_generic_chip - Allocate generic chips for an irq domain
* @d: irq domain for which to allocate chips
- * @irqs_per_chip: Number of interrupts each chip handles
+ * @irqs_per_chip: Number of interrupts each chip handles (max 32)
* @num_ct: Number of irq_chip_type instances associated with this
* @name: Name of the irq chip
* @handler: Default flow handler associated with these chips
@@ -270,11 +270,11 @@ irq_gc_init_mask_cache(struct irq_chip_generic *gc, enum irq_gc_flags flags)
* @set: IRQ_* bits to set in the mapping function
* @gcflags: Generic chip specific setup flags
*/
-int irq_alloc_domain_generic_chips(struct irq_domain *d, int irqs_per_chip,
- int num_ct, const char *name,
- irq_flow_handler_t handler,
- unsigned int clr, unsigned int set,
- enum irq_gc_flags gcflags)
+int __irq_alloc_domain_generic_chips(struct irq_domain *d, int irqs_per_chip,
+ int num_ct, const char *name,
+ irq_flow_handler_t handler,
+ unsigned int clr, unsigned int set,
+ enum irq_gc_flags gcflags)
{
struct irq_domain_chip_generic *dgc;
struct irq_chip_generic *gc;
@@ -326,7 +326,7 @@ int irq_alloc_domain_generic_chips(struct irq_domain *d, int irqs_per_chip,
d->name = name;
return 0;
}
-EXPORT_SYMBOL_GPL(irq_alloc_domain_generic_chips);
+EXPORT_SYMBOL_GPL(__irq_alloc_domain_generic_chips);
static struct irq_chip_generic *
__irq_get_domain_generic_chip(struct irq_domain *d, unsigned int hw_irq)