1 files changed, 12 insertions, 8 deletions

diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index eaaee1660bdf..ae41cf3cf4e5 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -68,31 +68,35 @@ static struct acpi_driver acpi_fan_driver = {
 };
 
 /* thermal cooling device callbacks */
-static int fan_get_max_state(struct thermal_cooling_device *cdev, char *buf)
+static int fan_get_max_state(struct thermal_cooling_device *cdev, unsigned long
+                             *state)
 {
         /* ACPI fan device only support two states: ON/OFF */
-        return sprintf(buf, "1\n");
+        *state = 1;
+        return 0;
 }
 
-static int fan_get_cur_state(struct thermal_cooling_device *cdev, char *buf)
+static int fan_get_cur_state(struct thermal_cooling_device *cdev, unsigned long
+                             *state)
 {
         struct acpi_device *device = cdev->devdata;
-        int state;
         int result;
+        int acpi_state;
 
         if (!device)
                 return -EINVAL;
 
-        result = acpi_bus_get_power(device->handle, &state);
+        result = acpi_bus_get_power(device->handle, &acpi_state);
         if (result)
                 return result;
 
-        return sprintf(buf, "%s\n", state == ACPI_STATE_D3 ? "0" :
-                         (state == ACPI_STATE_D0 ? "1" : "unknown"));
+        *state = (acpi_state == ACPI_STATE_D3 ? 0 :
+                 (acpi_state == ACPI_STATE_D0 ? 1 : -1));
+        return 0;
 }
 
 static int
-fan_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state)
+fan_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state)
 {
         struct acpi_device *device = cdev->devdata;
         int result;