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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>
wifi-calibration
Aaron Lu 2014-02-19 12:16:48 +08:00 committed by Rafael J. Wysocki
parent 5e2e46e84b
commit b9b8515f34
1 changed files with 9 additions and 4 deletions
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13
drivers/acpi/fan.c
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@ -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 */