#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
inline int acpi_battery_present(struct acpi_battery *battery)
#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
inline int acpi_battery_present(struct acpi_battery *battery)
if (acpi_battery_present(battery)) {
/* run battery update only if it is present */
acpi_battery_get_state(battery);
if (acpi_battery_present(battery)) {
/* run battery update only if it is present */
acpi_battery_get_state(battery);