Hi Anton,
Please ignore the following patch.
> This patch adds a helper function in the power supply core to get the power
> supply object from supplied_to list based on power supply attribute.
>
> Signed-off-by: Ramakrishna Pallala <ramakrishna.pall...@intel.com>
> ---
> drivers/power/power_supply_core.c | 19 +++++++++++++++++++
> include/linux/power_supply.h | 3 +++
> 2 files changed, 22 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/power/power_supply_core.c
> b/drivers/power/power_supply_core.c
> index ff990d2..5845a76 100644
> --- a/drivers/power/power_supply_core.c
> +++ b/drivers/power/power_supply_core.c
> @@ -158,6 +158,25 @@ struct power_supply
> *power_supply_get_by_name(char *name) }
> EXPORT_SYMBOL_GPL(power_supply_get_by_name);
>
> +struct power_supply *power_supply_get_by_suppliedto(struct power_supply
> *psy,
> + enum power_supply_property psp, int intval) {
> + union power_supply_propval ret = {0,};
> + struct power_supply *pst;
> + int i;
> +
> + for (i = 0; i < psy->num_supplicants; i++) {
> + pst = power_supply_get_by_name(psy->supplied_to[i]);
> + if (!pst || pst->get_property(pst, psp, &ret))
> + continue;
> + if (ret.intval == intval)
> + return pst;
> + }
> +
> + return NULL;
> +}
> +EXPORT_SYMBOL_GPL(power_supply_get_by_suppliedto);
> +
> int power_supply_powers(struct power_supply *psy, struct device *dev) {
> return sysfs_create_link(&psy->dev->kobj, &dev->kobj, "powers"); diff --
> git a/include/linux/power_supply.h b/include/linux/power_supply.h index
> 0bafbb1..3cfee0c 100644
> --- a/include/linux/power_supply.h
> +++ b/include/linux/power_supply.h
> @@ -219,6 +219,9 @@ struct power_supply_info { };
>
> extern struct power_supply *power_supply_get_by_name(char *name);
> +extern struct power_supply *power_supply_get_by_suppliedto(
> + struct power_supply *psy,
> + enum power_supply_property psp, int intval);
> extern void power_supply_changed(struct power_supply *psy); extern int
> power_supply_am_i_supplied(struct power_supply *psy); extern int
> power_supply_set_battery_charged(struct power_supply *psy);
> --
> 1.7.0.4
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