diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/base.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index ae26a15390f7..49a9ad8134db 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -466,6 +466,20 @@ static bool __of_device_is_available(const struct device_node *device) } /** + * __of_device_is_reserved - check if a device is reserved + * + * @device: Node to check for availability, with locks already held + * + * Return: True if the status property is set to "reserved", false otherwise + */ +static bool __of_device_is_reserved(const struct device_node *device) +{ + static const char * const reserved[] = {"reserved", NULL}; + + return __of_device_is_status(device, reserved); +} + +/** * of_device_is_available - check if a device is available for use * * @device: Node to check for availability @@ -651,6 +665,21 @@ struct device_node *of_get_next_available_child(const struct device_node *node, EXPORT_SYMBOL(of_get_next_available_child); /** + * of_get_next_reserved_child - Find the next reserved child node + * @node: parent node + * @prev: previous child of the parent node, or NULL to get first + * + * This function is like of_get_next_child(), except that it + * automatically skips any disabled nodes (i.e. status = "disabled"). + */ +struct device_node *of_get_next_reserved_child(const struct device_node *node, + struct device_node *prev) +{ + return of_get_next_status_child(node, prev, __of_device_is_reserved); +} +EXPORT_SYMBOL(of_get_next_reserved_child); + +/** * of_get_next_cpu_node - Iterate on cpu nodes * @prev: previous child of the /cpus node, or NULL to get first * |