ACPI battery: update status upon sysfs query
Sometimes the Battery driver doesn't get notifications when it's plugged/unplugged. And this results in the incorrect Battery status reported by the power supply sysfs I/F. Update Battery status first when querying from sysfs. http://marc.info/?l=linux-acpi&m=128855015826728&w=2 Tested_by: Seblu <seblu@seblu.net> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
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@ -130,6 +130,8 @@ struct acpi_battery {
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unsigned long flags;
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};
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static int acpi_battery_update(struct acpi_battery *battery);
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#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
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inline int acpi_battery_present(struct acpi_battery *battery)
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@ -184,6 +186,9 @@ static int acpi_battery_get_property(struct power_supply *psy,
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int ret = 0;
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struct acpi_battery *battery = to_acpi_battery(psy);
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if (acpi_battery_update(battery))
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return -ENODEV;
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if (acpi_battery_present(battery)) {
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/* run battery update only if it is present */
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acpi_battery_get_state(battery);
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