diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2022-02-06 19:35:42 +0100 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2022-02-11 19:08:34 +0100 |
| commit | 4e456230f1ba27deed5a2148bc58c85281d214b7 (patch) | |
| tree | 5178cd56f3288618cab6bfb0b13b4cb183af01bd | |
| parent | 445c21d2080f6ffaad3482409fe90e8ed22db6a2 (diff) | |
| download | linux-4e456230f1ba27deed5a2148bc58c85281d214b7.tar.bz2 | |
power: supply: bq24190_charger: Disallow ccc_ireg and cvc_vreg to be higher then the fwnode values
If the fwnode data as parsed by power_supply_get_battery_info() provides
max values for ccc_ireg and cvc_vreg then do not allow the user to later
set these to higher values then those specified by the firmware,
otherwise the battery might get damaged.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
| -rw-r--r-- | drivers/power/supply/bq24190_charger.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c index 974e4b6b8d4d..04aa25f2d033 100644 --- a/drivers/power/supply/bq24190_charger.c +++ b/drivers/power/supply/bq24190_charger.c @@ -1019,6 +1019,9 @@ static int bq24190_charger_set_current(struct bq24190_dev_info *bdi, if (v) curr *= 5; + if (curr > bdi->ichg_max) + return -EINVAL; + ret = bq24190_set_field_val(bdi, BQ24190_REG_CCC, BQ24190_REG_CCC_ICHG_MASK, BQ24190_REG_CCC_ICHG_SHIFT, bq24190_ccc_ichg_values, @@ -1052,6 +1055,9 @@ static int bq24190_charger_set_voltage(struct bq24190_dev_info *bdi, { int ret; + if (val->intval > bdi->vreg_max) + return -EINVAL; + ret = bq24190_set_field_val(bdi, BQ24190_REG_CVC, BQ24190_REG_CVC_VREG_MASK, BQ24190_REG_CVC_VREG_SHIFT, bq24190_cvc_vreg_values, @@ -1743,11 +1749,11 @@ static int bq24190_get_config(struct bq24190_dev_info *bdi) /* These are optional, so no warning when not set */ v = info->constant_charge_current_max_ua; if (v >= bq24190_ccc_ichg_values[0] && v <= bdi->ichg_max) - bdi->ichg = v; + bdi->ichg = bdi->ichg_max = v; v = info->constant_charge_voltage_max_uv; if (v >= bq24190_cvc_vreg_values[0] && v <= bdi->vreg_max) - bdi->vreg = v; + bdi->vreg = bdi->vreg_max = v; } return 0; |