[irqchip:,irq/irqchip-next] genirq: Add generic_handle_domain_irq() helper
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Message ID 162298342562.29796.8215575084721137387.tip-bot2@tip-bot2
State Accepted
Commit 8240ef50d4864325b346e40bb9d30cda9f22102d
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  • [irqchip:,irq/irqchip-next] genirq: Add generic_handle_domain_irq() helper
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Commit Message

tip-bot2 for Michal Suchanek June 6, 2021, 12:43 p.m. UTC
The following commit has been merged into the irq/irqchip-next branch of irqchip:

Commit-ID:     a5195903ffc6702ea6d90ea53f724cb78750b5c7
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/a5195903ffc6702ea6d90ea53f724cb78750b5c7
Author:        Marc Zyngier <maz@kernel.org>
AuthorDate:    Wed, 12 May 2021 13:45:52 +01:00
Committer:     Marc Zyngier <maz@kernel.org>
CommitterDate: Wed, 02 Jun 2021 17:35:36 +01:00

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>
---
 include/linux/irqdesc.h |  2 ++
 kernel/irq/irqdesc.c    | 19 ++++++++++++++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

Patch
diff mbox series

diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index 2971eb7..0f226c6 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 684c5b7..6179d5b 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