ACPI: thermal: add struct acpi_device to struct acpi_thermal.

- Use it instead of acpi_bus_get_device() where we can..

Signed-off-by: Patrick Mochel <mochel@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 5 insertions, 20 deletions

diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index c855f4446b5f..1d8c250c3c73 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -163,6 +163,7 @@ struct acpi_thermal_flags {
 
 struct acpi_thermal {
         acpi_handle handle;
+        struct acpi_device * device;
         acpi_bus_id name;
         unsigned long temperature;
         unsigned long last_temperature;
@@ -453,10 +454,6 @@ static int acpi_thermal_call_usermode(char *path)
 
 static int acpi_thermal_critical(struct acpi_thermal *tz)
 {
-        int result = 0;
-        struct acpi_device *device = NULL;
-
-
         if (!tz || !tz->trips.critical.flags.valid)
                 return -EINVAL;
 
@@ -466,14 +463,10 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
         } else if (tz->trips.critical.flags.enabled)
                 tz->trips.critical.flags.enabled = 0;
 
-        result = acpi_bus_get_device(tz->handle, &device);
-        if (result)
-                return result;
-
         printk(KERN_EMERG
                "Critical temperature reached (%ld C), shutting down.\n",
                KELVIN_TO_CELSIUS(tz->temperature));
-        acpi_bus_generate_event(device, ACPI_THERMAL_NOTIFY_CRITICAL,
+        acpi_bus_generate_event(tz->device, ACPI_THERMAL_NOTIFY_CRITICAL,
                                 tz->trips.critical.flags.enabled);
 
         acpi_thermal_call_usermode(ACPI_THERMAL_PATH_POWEROFF);
@@ -483,10 +476,6 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
 
 static int acpi_thermal_hot(struct acpi_thermal *tz)
 {
-        int result = 0;
-        struct acpi_device *device = NULL;
-
-
         if (!tz || !tz->trips.hot.flags.valid)
                 return -EINVAL;
 
@@ -496,11 +485,7 @@ static int acpi_thermal_hot(struct acpi_thermal *tz)
         } else if (tz->trips.hot.flags.enabled)
                 tz->trips.hot.flags.enabled = 0;
 
-        result = acpi_bus_get_device(tz->handle, &device);
-        if (result)
-                return result;
-
-        acpi_bus_generate_event(device, ACPI_THERMAL_NOTIFY_HOT,
+        acpi_bus_generate_event(tz->device, ACPI_THERMAL_NOTIFY_HOT,
                                 tz->trips.hot.flags.enabled);
 
         /* TBD: Call user-mode "sleep(S4)" function */
@@ -1193,8 +1178,7 @@ static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
         if (!tz)
                 return;
 
-        if (acpi_bus_get_device(tz->handle, &device))
-                return;
+        device = tz->device;
 
         switch (event) {
         case ACPI_THERMAL_NOTIFY_TEMPERATURE:
@@ -1294,6 +1278,7 @@ static int acpi_thermal_add(struct acpi_device *device)
         memset(tz, 0, sizeof(struct acpi_thermal));
 
         tz->handle = device->handle;
+        tz->device = device;
         strcpy(tz->name, device->pnp.bus_id);
         strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
         strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS);