Hi,
Thanks for the patch
> Subject: [PATCH v6 06/10] device connection: Add
> fwnode_connection_find_match()
>
> From: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
>
> The fwnode_connection_find_match() function is exactly the same as
> device_connection_find_match(), except it takes struct fwnode_handle as
> parameter instead of struct device.
> That allows locating device connections before the device entries have been
> created.
>
> Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Tested-by: Biju Das <biju.das@xxxxxxxxxxxxxx>
> ---
> v6:
> new patch
> ---
> drivers/base/devcon.c | 33 +++++++++++++++++++++++++--------
> include/linux/device.h | 10 +++++++---
> 2 files changed, 32 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/base/devcon.c b/drivers/base/devcon.c index
> 04db9ae235e4..8311b70bbca2 100644
> --- a/drivers/base/devcon.c
> +++ b/drivers/base/devcon.c
> @@ -12,9 +12,6 @@
> static DEFINE_MUTEX(devcon_lock);
> static LIST_HEAD(devcon_list);
>
> -typedef void *(*devcon_match_fn_t)(struct device_connection *con, int
> ep,
> - void *data);
> -
> static void *
> fwnode_graph_devcon_match(struct fwnode_handle *fwnode, const char
> *con_id,
> void *data, devcon_match_fn_t match) @@ -38,6
> +35,28 @@ fwnode_graph_devcon_match(struct fwnode_handle *fwnode,
> const char *con_id,
> return NULL;
> }
>
> +/**
> + * fwnode_connection_find_match - Find connection from a device node
> + * @fwnode: Device node with the connection
> + * @con_id: Identifier for the connection
> + * @data: Data for the match function
> + * @match: Function to check and convert the connection description
> + *
> + * Find a connection with unique identifier @con_id between @fwnode and
> +another
> + * device node. @match will be used to convert the connection
> +description to
> + * data the caller is expecting to be returned.
> + */
> +void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
> + const char *con_id, void *data,
> + devcon_match_fn_t match)
> +{
> + if (!fwnode || !match)
> + return NULL;
> +
> + return fwnode_graph_devcon_match(fwnode, con_id, data, match);
> }
> +EXPORT_SYMBOL_GPL(fwnode_connection_find_match);
> +
> /**
> * device_connection_find_match - Find physical connection to a device
> * @dev: Device with the connection
> @@ -61,11 +80,9 @@ void *device_connection_find_match(struct device
> *dev, const char *con_id,
> if (!match)
> return NULL;
>
> - if (fwnode) {
> - ret = fwnode_graph_devcon_match(fwnode, con_id, data,
> match);
> - if (ret)
> - return ret;
> - }
> + ret = fwnode_connection_find_match(fwnode, con_id, data,
> match);
> + if (ret)
> + return ret;
>
> mutex_lock(&devcon_lock);
>
> diff --git a/include/linux/device.h b/include/linux/device.h index
> e85264fb6616..9445f068602f 100644
> --- a/include/linux/device.h
> +++ b/include/linux/device.h
> @@ -772,10 +772,14 @@ struct device_connection {
> struct list_head list;
> };
>
> +typedef void *(*devcon_match_fn_t)(struct device_connection *con, int
> ep,
> + void *data);
> +
> +void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
> + const char *con_id, void *data,
> + devcon_match_fn_t match);
> void *device_connection_find_match(struct device *dev, const char
> *con_id,
> - void *data,
> - void *(*match)(struct device_connection
> *con,
> - int ep, void *data));
> + void *data, devcon_match_fn_t match);
>
> struct device *device_connection_find(struct device *dev, const char
> *con_id);
>
> --
> 2.21.0
