diff options
Diffstat (limited to 'arch/arm/kernel/devtree.c')
| -rw-r--r-- | arch/arm/kernel/devtree.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c index bee7f9d..0cdd7b4 100644 --- a/arch/arm/kernel/devtree.c +++ b/arch/arm/kernel/devtree.c @@ -9,7 +9,7 @@ */ #include <linux/init.h> -#include <linux/export.h> +#include <linux/module.h> #include <linux/errno.h> #include <linux/types.h> #include <linux/bootmem.h> @@ -132,3 +132,17 @@ struct machine_desc * __init setup_machine_fdt(unsigned int dt_phys) return mdesc_best; } + +/** + * irq_create_of_mapping - Hook to resolve OF irq specifier into a Linux irq# + * + * Currently the mapping mechanism is trivial; simple flat hwirq numbers are + * mapped 1:1 onto Linux irq numbers. Cascaded irq controllers are not + * supported. + */ +unsigned int irq_create_of_mapping(struct device_node *controller, + const u32 *intspec, unsigned int intsize) +{ + return intspec[0]; +} +EXPORT_SYMBOL_GPL(irq_create_of_mapping); |