ACPI / fan: remove no need check for device pointer
The device pointer will not be NULL in the PM callback and ACPI driver's
add/remove callback, so checking NULL for them isn't necessary.
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 562d5f3..df861bb 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -131,9 +131,6 @@
int result = 0;
struct thermal_cooling_device *cdev;
- if (!device)
- return -EINVAL;
-
strcpy(acpi_device_name(device), "Fan");
strcpy(acpi_device_class(device), ACPI_FAN_CLASS);
@@ -177,14 +174,7 @@
static int acpi_fan_remove(struct acpi_device *device)
{
- struct thermal_cooling_device *cdev;
-
- if (!device)
- return -EINVAL;
-
- cdev = acpi_driver_data(device);
- if (!cdev)
- return -EINVAL;
+ struct thermal_cooling_device *cdev = acpi_driver_data(device);
sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
sysfs_remove_link(&cdev->device.kobj, "device");
@@ -196,9 +186,6 @@
#ifdef CONFIG_PM_SLEEP
static int acpi_fan_suspend(struct device *dev)
{
- if (!dev)
- return -EINVAL;
-
acpi_bus_set_power(to_acpi_device(dev)->handle, ACPI_STATE_D0);
return AE_OK;
@@ -208,9 +195,6 @@
{
int result;
- if (!dev)
- return -EINVAL;
-
result = acpi_bus_update_power(to_acpi_device(dev)->handle, NULL);
if (result)
printk(KERN_ERR PREFIX "Error updating fan power state\n");