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@xxxxxxxxxxxxxx>
---
include/linux/power_supply.h | 2 ++
1 file changed, 2 insertions(+)
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
--
2.47.1
