This patch adds a new generic routine fwnode_dev_node_match that can be used e.g. as a callback for class_find_device(). It searches for the struct device corresponding to a struct fwnode_handle by iterating over device and its parents. Signed-off-by: Marcin Wojtas <mw@xxxxxxxxxxxx> --- include/linux/property.h | 2 ++ drivers/base/property.c | 22 ++++++++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/include/linux/property.h b/include/linux/property.h index 23330ae2b1fa..21b59ad08a39 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -456,6 +456,8 @@ int fwnode_connection_find_matches(struct fwnode_handle *fwnode, devcon_match_fn_t match, void **matches, unsigned int matches_len); +int fwnode_dev_node_match(struct device *dev, const void *data); + /* -------------------------------------------------------------------------- */ /* Software fwnode support - when HW description is incomplete or missing */ diff --git a/drivers/base/property.c b/drivers/base/property.c index ed6f449f8e5c..839e7d586129 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -1344,3 +1344,25 @@ int fwnode_connection_find_matches(struct fwnode_handle *fwnode, return count_graph + count_ref; } EXPORT_SYMBOL_GPL(fwnode_connection_find_matches); + +/* + * fwnode_dev_node_match - look for a device matching the struct fwnode_handle + * @dev: the struct device to initiate the search + * @data: pointer to the fwnode_handle + * + * Looks up the device structure corresponding with the fwnode by iterating + * over @dev and its parents. + * The routine can be used e.g. as a callback for class_find_device(). + * + * Return: 1 - if match is found, 0 - otherwise. + */ +int fwnode_dev_node_match(struct device *dev, const void *data) +{ + for (; dev; dev = dev->parent) { + if (device_match_fwnode(dev, data)) + return 1; + } + + return 0; +} +EXPORT_SYMBOL_GPL(fwnode_dev_node_match); -- 2.29.0