diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/battery.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 9810e2a55d0a..026e40755cdd 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -64,6 +64,7 @@ extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); static int acpi_battery_add(struct acpi_device *device); static int acpi_battery_remove(struct acpi_device *device, int type); +static int acpi_battery_resume(struct acpi_device *device, int status); static struct acpi_driver acpi_battery_driver = { .name = ACPI_BATTERY_DRIVER_NAME, @@ -71,6 +72,7 @@ static struct acpi_driver acpi_battery_driver = { .ids = ACPI_BATTERY_HID, .ops = { .add = acpi_battery_add, + .resume = acpi_battery_resume, .remove = acpi_battery_remove, }, }; @@ -753,6 +755,18 @@ static int acpi_battery_remove(struct acpi_device *device, int type) return 0; } +/* this is needed to learn about changes made in suspended state */ +static int acpi_battery_resume(struct acpi_device *device, int state) +{ + struct acpi_battery *battery; + + if (!device) + return -EINVAL; + + battery = device->driver_data; + return acpi_battery_check(battery); +} + static int __init acpi_battery_init(void) { int result; |