power_supply: Increment power supply use counter when obtaining references

Increment the power_supply.use_cnt usage counter on:
 - power_supply_get_by_phandle()
 - power_supply_get_by_name()
and decrement it on power_supply_put() call.

This helps tracking of valid usage of power supply instance by
consumers. The usage counter itself also allows safe calling of
power_supply_get_property-like functions even when driver unregisters
this power supply.

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Bartlomiej Zolnierkiewicz <[email protected]>
Signed-off-by: Sebastian Reichel <[email protected]>

0 files changed, 0 insertions, 0 deletions