diff options
| author |   Sakari Ailus <sakari.ailus@linux.intel.com> | 2017-03-28 10:52:22 +0300 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-03-29 00:00:28 +0200 |
| commit | e7887c284969a23a98fe1aff2f631c5ccdcd1757 (patch) | |
| tree | b0e8e433d7d97eb4c05b5dbaad451efc58544195 | |
| parent | device property: Add support for remote endpoints (diff) | |
| download | linux-dev-e7887c284969a23a98fe1aff2f631c5ccdcd1757.tar.xz linux-dev-e7887c284969a23a98fe1aff2f631c5ccdcd1757.zip | |
device property: Add fwnode_handle_get()
fwnode_handle_get() is used to obtain a reference to a fwnode_handle
container. In this case this is OF specific struct device_node.
This complements fwnode_handle_put() which is already implemented.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/base/property.c | 11 | ||||
| -rw-r--r-- | include/linux/property.h | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/base/property.c b/drivers/base/property.c index 4e98a6fad33f..23514bf67933 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -1041,6 +1041,17 @@ struct fwnode_handle *device_get_named_child_node(struct device *dev, EXPORT_SYMBOL_GPL(device_get_named_child_node); /** + * fwnode_handle_get - Obtain a reference to a device node + * @fwnode: Pointer to the device node to obtain the reference to. + */ +void fwnode_handle_get(struct fwnode_handle *fwnode) +{ + if (is_of_node(fwnode)) + of_node_get(to_of_node(fwnode)); +} +EXPORT_SYMBOL_GPL(fwnode_handle_get); + +/** * fwnode_handle_put - Drop reference to a device node * @fwnode: Pointer to the device node to drop the reference to. * diff --git a/include/linux/property.h b/include/linux/property.h index 8d7809c2c42d..0ae7d209f6c2 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -90,6 +90,7 @@ struct fwnode_handle *fwnode_get_named_child_node(struct fwnode_handle *fwnode, struct fwnode_handle *device_get_named_child_node(struct device *dev, const char *childname); +void fwnode_handle_get(struct fwnode_handle *fwnode); void fwnode_handle_put(struct fwnode_handle *fwnode); unsigned int device_get_child_node_count(struct device *dev); |