diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 9f884c948739..42b3f7d03a32 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -151,9 +151,9 @@ struct irq_domain_chip_generic; * Revmap data, used internally by irq_domain * @revmap_direct_max_irq: The largest hwirq that can be set for controllers that * support direct mapping - * @revmap_size: Size of the linear map table @linear_revmap[] + * @revmap_size: Size of the linear map table @revmap[] * @revmap_tree: Radix map tree for hwirqs that don't fit in the linear map - * @linear_revmap: Linear table of hwirq->virq reverse mappings + * @revmap: Linear table of hwirq->virq reverse mappings */ struct irq_domain { struct list_head link; @@ -177,7 +177,7 @@ struct irq_domain { unsigned int revmap_size; struct radix_tree_root revmap_tree; struct mutex revmap_tree_mutex; - unsigned int linear_revmap[]; + unsigned int revmap[]; }; /* Irq domain flags */ @@ -394,24 +394,20 @@ static inline unsigned int irq_create_mapping(struct irq_domain *host, return irq_create_mapping_affinity(host, hwirq, NULL); } - /** - * irq_linear_revmap() - Find a linux irq from a hw irq number. + * irq_find_mapping() - Find a linux irq from a hw irq number. * @domain: domain owning this hardware interrupt * @hwirq: hardware irq number in that domain space - * - * This is a fast path alternative to irq_find_mapping() that can be - * called directly by irq controller code to save a handful of - * instructions. It is always safe to call, but won't find irqs mapped - * using the radix tree. */ +extern unsigned int irq_find_mapping(struct irq_domain *host, + irq_hw_number_t hwirq); + static inline unsigned int irq_linear_revmap(struct irq_domain *domain, irq_hw_number_t hwirq) { - return hwirq < domain->revmap_size ? domain->linear_revmap[hwirq] : 0; + return irq_find_mapping(domain, hwirq); } -extern unsigned int irq_find_mapping(struct irq_domain *host, - irq_hw_number_t hwirq); + extern unsigned int irq_create_direct_mapping(struct irq_domain *host); extern const struct irq_domain_ops irq_domain_simple_ops; diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 6284443b87ec..8bd012253989 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -486,7 +486,7 @@ static void irq_domain_clear_mapping(struct irq_domain *domain, irq_hw_number_t hwirq) { if (hwirq < domain->revmap_size) { - domain->linear_revmap[hwirq] = 0; + domain->revmap[hwirq] = 0; } else { mutex_lock(&domain->revmap_tree_mutex); radix_tree_delete(&domain->revmap_tree, hwirq); @@ -499,7 +499,7 @@ static void irq_domain_set_mapping(struct irq_domain *domain, struct irq_data *irq_data) { if (hwirq < domain->revmap_size) { - domain->linear_revmap[hwirq] = irq_data->irq; + domain->revmap[hwirq] = irq_data->irq; } else { mutex_lock(&domain->revmap_tree_mutex); radix_tree_insert(&domain->revmap_tree, hwirq, irq_data); @@ -885,7 +885,7 @@ unsigned int irq_find_mapping(struct irq_domain *domain, /* Check if the hwirq is in the linear revmap. */ if (hwirq < domain->revmap_size) - return domain->linear_revmap[hwirq]; + return domain->revmap[hwirq]; rcu_read_lock(); data = radix_tree_lookup(&domain->revmap_tree, hwirq);