ACPI: fix fan after resume from S3

http://bugzilla.kernel.org/show_bug.cgi?id=7570

Signed-off-by: Konstantin Karasyov <konstantin.a.karasyov@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index c26468d..be9a878 100644 (file)
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -199,15 +199,14 @@ int acpi_bus_set_power(acpi_handle handle, int state)
         * Get device's current power state if it's unknown
         * This means device power state isn't initialized or previous setting failed
         */
-       if (!device->flags.force_power_state) {
-               if (device->power.state == ACPI_STATE_UNKNOWN)
-                       acpi_bus_get_power(device->handle, &device->power.state);
-               if (state == device->power.state) {
-                       ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
-                                         state));
-                       return 0;
-               }
+       if ((device->power.state == ACPI_STATE_UNKNOWN) || device->flags.force_power_state)
+               acpi_bus_get_power(device->handle, &device->power.state);
+       if ((state == device->power.state) && !device->flags.force_power_state) {
+               ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
+                                 state));
+               return 0;
        }
+
        if (!device->power.states[state].flags.valid) {
                printk(KERN_WARNING PREFIX "Device does not support D%d\n", state);
                return -ENODEV;

diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 0ba7dfb..01ce311 100644 (file)
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -412,6 +412,10 @@ int acpi_power_transition(struct acpi_device *device, int state)
                        goto end;
        }
 
+       if (device->power.state == state) {
+               goto end;
+       }
+
        /*
         * Then we dereference all power resources used in the current list.
         */

diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 986afd4..7118ac6 100644 (file)
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -1357,28 +1357,32 @@ static int acpi_thermal_remove(struct acpi_device *device, int type)
 static int acpi_thermal_resume(struct acpi_device *device)
 {
        struct acpi_thermal *tz = NULL;
-       int i;
+       int i, j, power_state, result;
+
 
        if (!device || !acpi_driver_data(device))
                return -EINVAL;
 
        tz = acpi_driver_data(device);
 
-       acpi_thermal_get_temperature(tz);
-
        for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
-               if (tz->trips.active[i].flags.valid) {
-                       tz->temperature = tz->trips.active[i].temperature;
-                       tz->trips.active[i].flags.enabled = 0;
-
-                       acpi_thermal_active(tz);
-
-                       tz->state.active |= tz->trips.active[i].flags.enabled;
-                       tz->state.active_index = i;
+               if (!(&tz->trips.active[i]))
+                       break;
+               if (!tz->trips.active[i].flags.valid)
+                       break;
+               tz->trips.active[i].flags.enabled = 1;
+               for (j = 0; j < tz->trips.active[i].devices.count; j++) {
+                       result = acpi_bus_get_power(tz->trips.active[i].devices.
+                           handles[j], &power_state);
+                       if (result || (power_state != ACPI_STATE_D0)) {
+                               tz->trips.active[i].flags.enabled = 0;
+                               break;
+                       }
                }
+               tz->state.active |= tz->trips.active[i].flags.enabled;
        }
 
-       acpi_thermal_check(tz);
+       acpi_thermal_check(tz);
 
        return AE_OK;
 }