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| author | Hans de Goede <hdegoede@redhat.com> | 2018-08-07 09:36:30 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-08-09 10:49:35 +0200 |
| commit | b41901a2cf06f33c030be96c075872201089d47a (patch) | |
| tree | 0f2f21d7c1a052bed2a68dc2221e689c85284cfb /drivers/acpi | |
| parent | 2754435d4c820875412785da9bfa017a74fe51a7 (diff) | |
| download | linux-b41901a2cf06f33c030be96c075872201089d47a.tar.bz2 | |
ACPI / battery: Do not export energy_full[_design] on devices without full_charge_capacity
On some devices (with a buggy _BIX implementation) full_charge_capacity
always reports as 0. This means that our energy_full sysfs attribute will
also always be 0, which is not useful to export.
Worse we calculate our reported capacity on full_charge_capacity and if it
is 0 we always report 0. This causes userspace to immediately shutdown or
hibernate the laptop since it assumes that the battery is critically low.
This commit makes us not report energy_full[_design] or capacity on such
broken devices, avoiding the immediate shutdown / hibernate from userspace.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=83941
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/battery.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index cb664e87cde8..cb97b6105f52 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -364,6 +364,20 @@ static enum power_supply_property energy_battery_props[] = { POWER_SUPPLY_PROP_SERIAL_NUMBER, }; +static enum power_supply_property energy_battery_full_cap_broken_props[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_CYCLE_COUNT, + POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_POWER_NOW, + POWER_SUPPLY_PROP_ENERGY_NOW, + POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_MANUFACTURER, + POWER_SUPPLY_PROP_SERIAL_NUMBER, +}; + /* -------------------------------------------------------------------------- Battery Management -------------------------------------------------------------------------- */ @@ -798,6 +812,11 @@ static int sysfs_add_battery(struct acpi_battery *battery) battery->bat_desc.properties = charge_battery_props; battery->bat_desc.num_properties = ARRAY_SIZE(charge_battery_props); + } else if (battery->full_charge_capacity == 0) { + battery->bat_desc.properties = + energy_battery_full_cap_broken_props; + battery->bat_desc.num_properties = + ARRAY_SIZE(energy_battery_full_cap_broken_props); } else { battery->bat_desc.properties = energy_battery_props; battery->bat_desc.num_properties = |