diff options
| author | Len Brown | 2010-10-25 02:12:57 -0400 |
|---|---|---|
| committer | Len Brown | 2010-10-25 02:12:57 -0400 |
| commit | 880308089d0abebac365c3a1378b4e3238b100ac (patch) | |
| tree | 5982233aa30655be23521221bb199e771e345fc6 /drivers/acpi/battery.c | |
| parent | e000f8f72908e2ae924ec3900f2c0e18e76d26da (diff) | |
| parent | a1b4bd694a803eba49d637de32bb249638ceadb4 (diff) | |
Merge branch 'battery' into release
Diffstat (limited to 'drivers/acpi/battery.c')
| -rw-r--r-- | drivers/acpi/battery.c | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 0b2707ee094b..95649d373071 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -181,6 +181,7 @@ static int acpi_battery_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { + int ret = 0; struct acpi_battery *battery = to_acpi_battery(psy); if (acpi_battery_present(battery)) { @@ -209,26 +210,44 @@ static int acpi_battery_get_property(struct power_supply *psy, val->intval = battery->cycle_count; break; case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: - val->intval = battery->design_voltage * 1000; + if (battery->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) + ret = -ENODEV; + else + val->intval = battery->design_voltage * 1000; break; case POWER_SUPPLY_PROP_VOLTAGE_NOW: - val->intval = battery->voltage_now * 1000; + if (battery->voltage_now == ACPI_BATTERY_VALUE_UNKNOWN) + ret = -ENODEV; + else + val->intval = battery->voltage_now * 1000; break; case POWER_SUPPLY_PROP_CURRENT_NOW: case POWER_SUPPLY_PROP_POWER_NOW: - val->intval = battery->rate_now * 1000; + if (battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN) + ret = -ENODEV; + else + val->intval = battery->rate_now * 1000; break; case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: - val->intval = battery->design_capacity * 1000; + if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) + ret = -ENODEV; + else + val->intval = battery->design_capacity * 1000; break; case POWER_SUPPLY_PROP_CHARGE_FULL: case POWER_SUPPLY_PROP_ENERGY_FULL: - val->intval = battery->full_charge_capacity * 1000; + if (battery->full_charge_capacity == ACPI_BATTERY_VALUE_UNKNOWN) + ret = -ENODEV; + else + val->intval = battery->full_charge_capacity * 1000; break; case POWER_SUPPLY_PROP_CHARGE_NOW: case POWER_SUPPLY_PROP_ENERGY_NOW: - val->intval = battery->capacity_now * 1000; + if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN) + ret = -ENODEV; + else + val->intval = battery->capacity_now * 1000; break; case POWER_SUPPLY_PROP_MODEL_NAME: val->strval = battery->model_number; @@ -240,9 +259,9 @@ static int acpi_battery_get_property(struct power_supply *psy, val->strval = battery->serial_number; break; default: - return -EINVAL; + ret = -EINVAL; } - return 0; + return ret; } static enum power_supply_property charge_battery_props[] = { |