diff options
| author | Marc Zyngier <maz@kernel.org> | 2021-05-12 13:45:52 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-06-10 13:09:19 +0100 |
| commit | 8240ef50d4864325b346e40bb9d30cda9f22102d (patch) | |
| tree | 00623dc13af3bebdbaa4a604acf54027a2940a15 | |
| parent | 9e027dd979beca41cd85f4e971d184fe0ffcff3c (diff) | |
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: Marc Zyngier <maz@kernel.org>
| -rw-r--r-- | include/linux/irqdesc.h | 2 | ||||
| -rw-r--r-- | kernel/irq/irqdesc.c | 19 |
2 files changed, 20 insertions, 1 deletions
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 2971eb7e65f1..0f226c6b0c70 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -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) { diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index 684c5b7b7832..6179d5bde88e 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -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 |