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authorAaron Lu <aaron.lu@intel.com>2013-11-19 15:21:24 +0800
committerZhang Rui <rui.zhang@intel.com>2014-10-10 13:57:11 +0800
commit8dd41f78adebb57909cccb0272e74c79e38b5238 (patch)
tree2689c5c2eaabc7ef048bb392e7b0246b3276603f
parentbd6ad24342c3bc0476ba3f0b647c5ba0a71b45b4 (diff)
downloadlinux-8dd41f78adebb57909cccb0272e74c79e38b5238.tar.bz2
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>
-rw-r--r--drivers/acpi/fan.c18
1 files changed, 1 insertions, 17 deletions
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 562d5f3a1bb5..df861bbc73cc 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -131,9 +131,6 @@ static int acpi_fan_add(struct acpi_device *device)
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 @@ end:
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 @@ static int acpi_fan_remove(struct acpi_device *device)
#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 @@ static int acpi_fan_resume(struct device *dev)
{
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");