};
struct acpi_fan {
- acpi_handle handle;
+ struct acpi_device * device;
};
/* --------------------------------------------------------------------------
if (fan) {
- if (acpi_bus_get_power(fan->handle, &state))
+ if (acpi_bus_get_power(fan->device->handle, &state))
seq_printf(seq, "status: ERROR\n");
else
seq_printf(seq, "status: %s\n",
size_t count, loff_t * ppos)
{
int result = 0;
- struct seq_file *m = (struct seq_file *)file->private_data;
- struct acpi_fan *fan = (struct acpi_fan *)m->private;
+ struct seq_file *m = file->private_data;
+ struct acpi_fan *fan = m->private;
char state_string[12] = { '\0' };
state_string[count] = '\0';
- result = acpi_bus_set_power(fan->handle,
+ result = acpi_bus_set_power(fan->device->handle,
simple_strtoul(state_string, NULL, 0));
if (result)
return result;
return count;
}
-static struct file_operations acpi_fan_state_ops = {
+static const struct file_operations acpi_fan_state_ops = {
.open = acpi_fan_state_open_fs,
.read = seq_read,
.write = acpi_fan_write_state,
if (!device)
return -EINVAL;
- fan = kmalloc(sizeof(struct acpi_fan), GFP_KERNEL);
+ fan = kzalloc(sizeof(struct acpi_fan), GFP_KERNEL);
if (!fan)
return -ENOMEM;
- memset(fan, 0, sizeof(struct acpi_fan));
- fan->handle = device->handle;
+ fan->device = device;
strcpy(acpi_device_name(device), "Fan");
strcpy(acpi_device_class(device), ACPI_FAN_CLASS);
acpi_driver_data(device) = fan;
- result = acpi_bus_get_power(fan->handle, &state);
+ result = acpi_bus_get_power(device->handle, &state);
if (result) {
printk(KERN_ERR PREFIX "Reading power state\n");
goto end;
if (!device || !acpi_driver_data(device))
return -EINVAL;
- fan = (struct acpi_fan *)acpi_driver_data(device);
+ fan = acpi_driver_data(device);
acpi_fan_remove_fs(device);