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path: root/drivers/acpi/thermal.c
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Diffstat (limited to 'drivers/acpi/thermal.c')
-rw-r--r--drivers/acpi/thermal.c57
1 files changed, 20 insertions, 37 deletions
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index c855f4446b5f..503c0b99db12 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -162,7 +162,7 @@ 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;
@@ -229,7 +229,7 @@ static int acpi_thermal_get_temperature(struct acpi_thermal *tz)
tz->last_temperature = tz->temperature;
status =
- acpi_evaluate_integer(tz->handle, "_TMP", NULL, &tz->temperature);
+ acpi_evaluate_integer(tz->device->handle, "_TMP", NULL, &tz->temperature);
if (ACPI_FAILURE(status))
return -ENODEV;
@@ -248,7 +248,7 @@ static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz)
return -EINVAL;
status =
- acpi_evaluate_integer(tz->handle, "_TZP", NULL,
+ acpi_evaluate_integer(tz->device->handle, "_TZP", NULL,
&tz->polling_frequency);
if (ACPI_FAILURE(status))
return -ENODEV;
@@ -285,7 +285,7 @@ static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode)
if (!tz)
return -EINVAL;
- status = acpi_get_handle(tz->handle, "_SCP", &handle);
+ status = acpi_get_handle(tz->device->handle, "_SCP", &handle);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n"));
return -ENODEV;
@@ -316,7 +316,7 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
/* Critical Shutdown (required) */
- status = acpi_evaluate_integer(tz->handle, "_CRT", NULL,
+ status = acpi_evaluate_integer(tz->device->handle, "_CRT", NULL,
&tz->trips.critical.temperature);
if (ACPI_FAILURE(status)) {
tz->trips.critical.flags.valid = 0;
@@ -332,7 +332,7 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
/* Critical Sleep (optional) */
status =
- acpi_evaluate_integer(tz->handle, "_HOT", NULL,
+ acpi_evaluate_integer(tz->device->handle, "_HOT", NULL,
&tz->trips.hot.temperature);
if (ACPI_FAILURE(status)) {
tz->trips.hot.flags.valid = 0;
@@ -346,7 +346,7 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
/* Passive: Processors (optional) */
status =
- acpi_evaluate_integer(tz->handle, "_PSV", NULL,
+ acpi_evaluate_integer(tz->device->handle, "_PSV", NULL,
&tz->trips.passive.temperature);
if (ACPI_FAILURE(status)) {
tz->trips.passive.flags.valid = 0;
@@ -355,25 +355,25 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
tz->trips.passive.flags.valid = 1;
status =
- acpi_evaluate_integer(tz->handle, "_TC1", NULL,
+ acpi_evaluate_integer(tz->device->handle, "_TC1", NULL,
&tz->trips.passive.tc1);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
status =
- acpi_evaluate_integer(tz->handle, "_TC2", NULL,
+ acpi_evaluate_integer(tz->device->handle, "_TC2", NULL,
&tz->trips.passive.tc2);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
status =
- acpi_evaluate_integer(tz->handle, "_TSP", NULL,
+ acpi_evaluate_integer(tz->device->handle, "_TSP", NULL,
&tz->trips.passive.tsp);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
status =
- acpi_evaluate_reference(tz->handle, "_PSL", NULL,
+ acpi_evaluate_reference(tz->device->handle, "_PSL", NULL,
&tz->trips.passive.devices);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
@@ -393,14 +393,14 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
char name[5] = { '_', 'A', 'C', ('0' + i), '\0' };
status =
- acpi_evaluate_integer(tz->handle, name, NULL,
+ acpi_evaluate_integer(tz->device->handle, name, NULL,
&tz->trips.active[i].temperature);
if (ACPI_FAILURE(status))
break;
name[2] = 'L';
status =
- acpi_evaluate_reference(tz->handle, name, NULL,
+ acpi_evaluate_reference(tz->device->handle, name, NULL,
&tz->trips.active[i].devices);
if (ACPI_SUCCESS(status)) {
tz->trips.active[i].flags.valid = 1;
@@ -424,7 +424,7 @@ static int acpi_thermal_get_devices(struct acpi_thermal *tz)
return -EINVAL;
status =
- acpi_evaluate_reference(tz->handle, "_TZD", NULL, &tz->devices);
+ acpi_evaluate_reference(tz->device->handle, "_TZD", NULL, &tz->devices);
if (ACPI_FAILURE(status))
return -ENODEV;
@@ -453,10 +453,6 @@ 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 +462,10 @@ 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 +475,6 @@ 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 +484,7 @@ 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 +1177,7 @@ 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:
@@ -1293,7 +1276,7 @@ static int acpi_thermal_add(struct acpi_device *device)
return -ENOMEM;
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);
@@ -1311,7 +1294,7 @@ static int acpi_thermal_add(struct acpi_device *device)
acpi_thermal_check(tz);
- status = acpi_install_notify_handler(tz->handle,
+ status = acpi_install_notify_handler(device->handle,
ACPI_DEVICE_NOTIFY,
acpi_thermal_notify, tz);
if (ACPI_FAILURE(status)) {
@@ -1352,7 +1335,7 @@ static int acpi_thermal_remove(struct acpi_device *device, int type)
/* deferred task may reinsert timer */
del_timer_sync(&(tz->timer));
- status = acpi_remove_notify_handler(tz->handle,
+ status = acpi_remove_notify_handler(device->handle,
ACPI_DEVICE_NOTIFY,
acpi_thermal_notify);
generated by cgit (git 2.34.1) at 2025-10-31 11:28:13 +0000