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);
static struct acpi_driver acpi_battery_driver = {
.name = ACPI_BATTERY_DRIVER_NAME,
.ids = ACPI_BATTERY_HID,
.ops = {
.add = acpi_battery_add,
+ .resume = acpi_battery_resume,
.remove = acpi_battery_remove,
},
};
return -ENODEV;
}
- package = (union acpi_object *)buffer.pointer;
+ package = buffer.pointer;
/* Extract Package Data */
goto end;
}
- data.pointer = kmalloc(data.length, GFP_KERNEL);
+ data.pointer = kzalloc(data.length, GFP_KERNEL);
if (!data.pointer) {
result = -ENOMEM;
goto end;
}
- memset(data.pointer, 0, data.length);
status = acpi_extract_package(package, &format, &data);
if (ACPI_FAILURE(status)) {
kfree(buffer.pointer);
if (!result)
- (*bif) = (struct acpi_battery_info *)data.pointer;
+ (*bif) = data.pointer;
return result;
}
return -ENODEV;
}
- package = (union acpi_object *)buffer.pointer;
+ package = buffer.pointer;
/* Extract Package Data */
goto end;
}
- data.pointer = kmalloc(data.length, GFP_KERNEL);
+ data.pointer = kzalloc(data.length, GFP_KERNEL);
if (!data.pointer) {
result = -ENOMEM;
goto end;
}
- memset(data.pointer, 0, data.length);
status = acpi_extract_package(package, &format, &data);
if (ACPI_FAILURE(status)) {
kfree(buffer.pointer);
if (!result)
- (*bst) = (struct acpi_battery_status *)data.pointer;
+ (*bst) = data.pointer;
return result;
}
static int acpi_battery_read_info(struct seq_file *seq, void *offset)
{
int result = 0;
- struct acpi_battery *battery = (struct acpi_battery *)seq->private;
+ struct acpi_battery *battery = seq->private;
struct acpi_battery_info *bif = NULL;
char *units = "?";
static int acpi_battery_read_state(struct seq_file *seq, void *offset)
{
int result = 0;
- struct acpi_battery *battery = (struct acpi_battery *)seq->private;
+ struct acpi_battery *battery = seq->private;
struct acpi_battery_status *bst = NULL;
char *units = "?";
static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
{
- struct acpi_battery *battery = (struct acpi_battery *)seq->private;
+ struct acpi_battery *battery = seq->private;
char *units = "?";
{
int result = 0;
char alarm_string[12] = { '\0' };
- struct seq_file *m = (struct seq_file *)file->private_data;
- struct acpi_battery *battery = (struct acpi_battery *)m->private;
+ struct seq_file *m = file->private_data;
+ struct acpi_battery *battery = m->private;
if (!battery || (count > sizeof(alarm_string) - 1))
static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
{
- struct acpi_battery *battery = (struct acpi_battery *)data;
+ struct acpi_battery *battery = data;
struct acpi_device *device = NULL;
if (!device)
return -EINVAL;
- battery = kmalloc(sizeof(struct acpi_battery), GFP_KERNEL);
+ battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL);
if (!battery)
return -ENOMEM;
- memset(battery, 0, sizeof(struct acpi_battery));
battery->device = device;
strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
if (!device || !acpi_driver_data(device))
return -EINVAL;
- battery = (struct acpi_battery *)acpi_driver_data(device);
+ battery = acpi_driver_data(device);
status = acpi_remove_notify_handler(device->handle,
ACPI_ALL_NOTIFY,
return 0;
}
+/* this is needed to learn about changes made in suspended state */
+static int acpi_battery_resume(struct acpi_device *device)
+{
+ 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;