ACPI: thermal fixup

The alias name may be used in _PSL, _ALx and _TZD,
so we bind the cooling device only if the acpi_device node matches.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Thomas Sujith <sujith.thomas@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 24 insertions, 18 deletions

diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index aee371f9daf8..73f276bc6e4f 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -1015,7 +1015,9 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
 {
         struct acpi_device *device = cdev->devdata;
         struct acpi_thermal *tz = thermal->devdata;
-        acpi_handle handle = device->handle;
+        struct acpi_device *dev;
+        acpi_status status;
+        acpi_handle handle;
         int i;
         int j;
         int trip = -1;
@@ -1031,12 +1033,13 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
                 trip++;
                 for (i = 0; i < tz->trips.passive.devices.count;
                     i++) {
-                        if (tz->trips.passive.devices.handles[i] !=
-                                handle)
-                                continue;
-                        result = action(thermal, trip, cdev);
-                        if (result)
-                                goto failed;
+                        handle = tz->trips.passive.devices.handles[i];
+                        status = acpi_bus_get_device(handle, &dev);
+                        if (ACPI_SUCCESS(status) && (dev == device)) {
+                                result = action(thermal, trip, cdev);
+                                if (result)
+                                        goto failed;
+                        }
                 }
         }
 
@@ -1047,21 +1050,24 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
                 for (j = 0;
                     j < tz->trips.active[i].devices.count;
                     j++) {
-                        if (tz->trips.active[i].devices.
-                                                handles[j] != handle)
-                                continue;
-                        result = action(thermal, trip, cdev);
-                        if (result)
-                                goto failed;
+                        handle = tz->trips.active[i].devices.handles[j];
+                        status = acpi_bus_get_device(handle, &dev);
+                        if (ACPI_SUCCESS(status) && (dev == device)) {
+                                result = action(thermal, trip, cdev);
+                                if (result)
+                                        goto failed;
+                        }
                 }
         }
 
         for (i = 0; i < tz->devices.count; i++) {
-                if (tz->devices.handles[i] != handle)
-                        continue;
-                result = action(thermal, -1, cdev);
-                if (result)
-                        goto failed;
+                handle = tz->devices.handles[i];
+                status = acpi_bus_get_device(handle, &dev);
+                if (ACPI_SUCCESS(status) && (dev == device)) {
+                        result = action(thermal, -1, cdev);
+                        if (result)
+                                goto failed;
+                }
         }
 
 failed: