ACPI / fan: do nothing in suspend and poweroff callback

We put fans to full speed in acpi_fan_suspend(), but that is only
needed in the hibernation case when we are generating hibernation
image, so this patch removes that when we are about to suspend or
poweroff.

References: http://www.spinics.net/lists/linux-acpi/msg48636.html
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 09e423f..8acf53e 100644 (file)
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -55,11 +55,16 @@ MODULE_DEVICE_TABLE(acpi, fan_device_ids);
 #ifdef CONFIG_PM_SLEEP
 static int acpi_fan_suspend(struct device *dev);
 static int acpi_fan_resume(struct device *dev);
+static struct dev_pm_ops acpi_fan_pm = {
+       .resume = acpi_fan_resume,
+       .freeze = acpi_fan_suspend,
+       .thaw = acpi_fan_resume,
+       .restore = acpi_fan_resume,
+};
+#define FAN_PM_OPS_PTR (&acpi_fan_pm)
 #else
-#define acpi_fan_suspend NULL
-#define acpi_fan_resume NULL
+#define FAN_PM_OPS_PTR NULL
 #endif
-static SIMPLE_DEV_PM_OPS(acpi_fan_pm, acpi_fan_suspend, acpi_fan_resume);
 
 static struct acpi_driver acpi_fan_driver = {
        .name = "fan",
@@ -69,7 +74,7 @@ static struct acpi_driver acpi_fan_driver = {
                .add = acpi_fan_add,
                .remove = acpi_fan_remove,
                },
-       .drv.pm = &acpi_fan_pm,
+       .drv.pm = FAN_PM_OPS_PTR,
 };
 
 /* thermal cooling device callbacks */