diff options
| author | Rafael J. Wysocki <rjw@sisk.pl> | 2010-11-25 00:11:24 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2011-01-12 10:48:45 +0100 |
| commit | 488a76c52606199100adf09c8eb7cbedbd94e9d9 (patch) | |
| tree | bd5c7f8b546f881936d9c72989de7046c39fd755 /drivers/acpi/fan.c | |
| parent | ACPI / PM: Register power resource devices as soon as they are needed (diff) | |
| download | linux-488a76c52606199100adf09c8eb7cbedbd94e9d9.tar.xz linux-488a76c52606199100adf09c8eb7cbedbd94e9d9.zip | |
ACPI / Fan: Rework the handling of power resources
Use the new function acpi_bus_update_power() for manipulating power
resources used by ACPI fan devices, which allows them to be put into
the right state during initialization and resume. Consequently,
remove the flags.force_power_state field from struct acpi_device,
which is not necessary any more.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/fan.c')
| -rw-r--r-- | drivers/acpi/fan.c | 27 |
1 files changed, 7 insertions, 20 deletions
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c index 60049080c869..467479f07c1f 100644 --- a/drivers/acpi/fan.c +++ b/drivers/acpi/fan.c @@ -86,7 +86,7 @@ static int fan_get_cur_state(struct thermal_cooling_device *cdev, unsigned long if (!device) return -EINVAL; - result = acpi_bus_get_power(device->handle, &acpi_state); + result = acpi_bus_update_power(device->handle, &acpi_state); if (result) return result; @@ -123,7 +123,6 @@ static struct thermal_cooling_device_ops fan_cooling_ops = { static int acpi_fan_add(struct acpi_device *device) { int result = 0; - int state = 0; struct thermal_cooling_device *cdev; if (!device) @@ -132,16 +131,12 @@ static int acpi_fan_add(struct acpi_device *device) strcpy(acpi_device_name(device), "Fan"); strcpy(acpi_device_class(device), ACPI_FAN_CLASS); - result = acpi_bus_get_power(device->handle, &state); + result = acpi_bus_update_power(device->handle, NULL); if (result) { - printk(KERN_ERR PREFIX "Reading power state\n"); + printk(KERN_ERR PREFIX "Setting initial power state\n"); goto end; } - device->flags.force_power_state = 1; - acpi_bus_set_power(device->handle, state); - device->flags.force_power_state = 0; - cdev = thermal_cooling_device_register("Fan", device, &fan_cooling_ops); if (IS_ERR(cdev)) { @@ -200,22 +195,14 @@ static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state) static int acpi_fan_resume(struct acpi_device *device) { - int result = 0; - int power_state = 0; + int result; if (!device) return -EINVAL; - result = acpi_bus_get_power(device->handle, &power_state); - if (result) { - printk(KERN_ERR PREFIX - "Error reading fan power state\n"); - return result; - } - - device->flags.force_power_state = 1; - acpi_bus_set_power(device->handle, power_state); - device->flags.force_power_state = 0; + result = acpi_bus_update_power(device->handle, NULL); + if (result) + printk(KERN_ERR PREFIX "Error updating fan power state\n"); return result; } |