diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/irq.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c index ed64d98807f9..0baf626da56a 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -689,6 +689,24 @@ static struct irq_domain *__of_get_msi_domain(struct device_node *np, } /** + * of_msi_map_get_device_domain - Use msi-map to find the relevant MSI domain + * @dev: device for which the mapping is to be done. + * @rid: Requester ID for the device. + * + * Walk up the device hierarchy looking for devices with a "msi-map" + * property. + * + * Returns: the MSI domain for this device (or NULL on failure) + */ +struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 rid) +{ + struct device_node *np = NULL; + + __of_msi_map_rid(dev, &np, rid); + return __of_get_msi_domain(np, DOMAIN_BUS_PCI_MSI); +} + +/** * of_msi_get_domain - Use msi-parent to find the relevant MSI domain * @dev: device for which the domain is requested * @np: device node for @dev |