Instead of spilling the match function to check the of_node for a given value, lets add a common helper. Also add a wrapper to find device by of_node pointer for bus.
Cc: "Rafael J. Wysocki" <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Ulf Hansson <[email protected]> Cc: Joe Perches <[email protected]> Signed-off-by: Suzuki K Poulose <[email protected]> --- drivers/base/core.c | 6 ++++++ include/linux/device.h | 17 +++++++++++++++++ 2 files changed, 23 insertions(+) diff --git a/drivers/base/core.c b/drivers/base/core.c index fd7511e..d20699c 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -3328,3 +3328,9 @@ void device_set_of_node_from_dev(struct device *dev, const struct device *dev2) dev->of_node_reused = true; } EXPORT_SYMBOL_GPL(device_set_of_node_from_dev); + +int device_match_of_node(struct device *dev, void *np) +{ + return dev->of_node == np; +} +EXPORT_SYMBOL_GPL(device_match_of_node); diff --git a/include/linux/device.h b/include/linux/device.h index e85264f..fe16be4 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -163,6 +163,8 @@ void subsys_dev_iter_init(struct subsys_dev_iter *iter, struct device *subsys_dev_iter_next(struct subsys_dev_iter *iter); void subsys_dev_iter_exit(struct subsys_dev_iter *iter); +int device_match_of_node(struct device *dev, void *np); + int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data, int (*fn)(struct device *dev, void *data)); struct device *bus_find_device(struct bus_type *bus, struct device *start, @@ -171,6 +173,21 @@ struct device *bus_find_device(struct bus_type *bus, struct device *start, struct device *bus_find_device_by_name(struct bus_type *bus, struct device *start, const char *name); + +/** + * bus_find_device_by_of_node : device iterator for locating a particular device + * matching the of_node. + * @bus: bus type + * @start: Device to begin with + * @np: of_node of the device to match. + */ +static inline struct device *bus_find_device_by_of_node(struct bus_type *bus, + struct device *start, + struct device_node *np) +{ + return bus_find_device(bus, start, np, device_match_of_node); +} + struct device *subsys_find_device_by_id(struct bus_type *bus, unsigned int id, struct device *hint); int bus_for_each_drv(struct bus_type *bus, struct device_driver *start, -- 2.7.4
