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authorMarc Zyngier <maz@kernel.org>2021-05-12 15:45:52 +0300
committerMarc Zyngier <maz@kernel.org>2021-06-10 15:09:19 +0300
commit8240ef50d4864325b346e40bb9d30cda9f22102d (patch)
tree00623dc13af3bebdbaa4a604acf54027a2940a15 /kernel/irq/irqdesc.c
parent9e027dd979beca41cd85f4e971d184fe0ffcff3c (diff)
downloadlinux-8240ef50d4864325b346e40bb9d30cda9f22102d.tar.xz
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>
Diffstat (limited to 'kernel/irq/irqdesc.c')
-rw-r--r--kernel/irq/irqdesc.c19
1 files changed, 18 insertions, 1 deletions
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