Commit f5220403 authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Sebastian Reichel
Browse files

power: supply: core: introduce dev_to_psy() 



The psy core and drivers currently use dev_get_drvdata() to go from a
'struct device' to its 'struct power_supply'.
This is not typesafe and or documented.

Introduce a new helper to make this pattern explicit.
Instead of using dev_get_drvdata(), use container_of_const() which
also preserves the constness.
Furthermore 'dev' does need to be dereferenced anymore and at some point
the drvdata could be reused for something else.

Signed-off-by: default avatarThomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20241210-power-supply-dev_to_psy-v2-7-9d8c9d24cfe4@weissschuh.net


Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent bfc33032

include/linux/power_supply.h

+2 −0
Original line number Diff line number Diff line
@@ -318,6 +318,8 @@ struct power_supply { 
#endif

};



#define dev_to_psy(__dev)	container_of_const(__dev, struct power_supply, dev)



/*

 * This is recommended structure to specify static power supply parameters.

 * Generic one, parametrizable for different power supplies. Power supply