[PATCH] genirq: fix comment to __handle_domain_irq

[Vladimir Murzin <vladimir.murzin@arm.com>]

NULL domain is valid parameter and handled as default irq domain by
irq_find_mapping(). Instead of using NULL domain, dedicated "lookup"
parameter should be used to indicate whether conversion of HW
interrupt to the logical one is needed or not.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
---
 include/linux/irqdesc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index c9be579..8f5f7d9 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -156,7 +156,7 @@ static inline void generic_handle_irq_desc(struct irq_desc *desc)
 /*
  * Convert a HW interrupt number to a logical one using a IRQ domain,
  * and handle the result interrupt number. Return -EINVAL if
- * conversion failed. Providing a NULL domain indicates that the
+ * conversion failed. Providing lookup set to false indicates that the
  * conversion has already been done.
  */
 int __handle_domain_irq(struct irq_domain *domain, unsigned int hwirq,
-- 
1.9.1