| Message ID | 20241210-power-supply-dev_to_psy-v2-7-9d8c9d24cfe4@weissschuh.net (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | power: supply: introduce and use power_supply_for_each_psy() and dev_to_psy() | expand |
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 3d67f4a6a1c934f387adde12fc96a63a99299923..17fc383785bf5705ef3dbe5fdebf90843684b715 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -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
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: Thomas Weißschuh <linux@weissschuh.net> --- include/linux/power_supply.h | 2 ++ 1 file changed, 2 insertions(+)