Commit 8240ef50 authored by Marc Zyngier's avatar Marc Zyngier
Browse files

genirq: Add generic_handle_domain_irq() helper 



Provide generic_handle_domain_irq() as a pendent to handle_domain_irq()
for non-root interrupt controllers

Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
parent 9e027dd9

include/linux/irqdesc.h

+2 −0
Original line number Diff line number Diff line
@@ -170,6 +170,8 @@ int generic_handle_irq(unsigned int irq); 
int __handle_domain_irq(struct irq_domain *domain, unsigned int hwirq,

			bool lookup, struct pt_regs *regs);



int generic_handle_domain_irq(struct irq_domain *domain, unsigned int hwirq);



static inline int handle_domain_irq(struct irq_domain *domain,

				    unsigned int hwirq, struct pt_regs *regs)

{

kernel/irq/irqdesc.c

+18 −1
Original line number Diff line number Diff line
@@ -661,7 +661,24 @@ EXPORT_SYMBOL_GPL(generic_handle_irq); 


#ifdef CONFIG_HANDLE_DOMAIN_IRQ

/**

 * __handle_domain_irq - Invoke the handler for a HW irq belonging to a domain

 * generic_handle_domain_irq - Invoke the handler for a HW irq belonging

 *                             to a domain, usually for a non-root interrupt

 *                             controller

 * @domain:	The domain where to perform the lookup

 * @hwirq:	The HW irq number to convert to a logical one

 *

 * Returns:	0 on success, or -EINVAL if conversion has failed

 *

 */

int generic_handle_domain_irq(struct irq_domain *domain, unsigned int hwirq)

{

	return handle_irq_desc(irq_resolve_mapping(domain, hwirq));

}

EXPORT_SYMBOL_GPL(generic_handle_domain_irq);



/**

 * __handle_domain_irq - Invoke the handler for a HW irq belonging to a domain,

 *                       usually for a root interrupt controller

 * @domain:	The domain where to perform the lookup

 * @hwirq:	The HW irq number to convert to a logical one

 * @lookup:	Whether to perform the domain lookup or not