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-rw-r--r--drivers/acpi/thermal.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index b6b3bec8454..74e25be8abc 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -82,6 +82,10 @@ static int off;
module_param(off, int, 0);
MODULE_PARM_DESC(off, "Set to disable ACPI thermal support.\n");
+static int psv;
+module_param(psv, int, 0644);
+MODULE_PARM_DESC(psv, "Disable or override all passive trip points.\n");
+
static int acpi_thermal_add(struct acpi_device *device);
static int acpi_thermal_remove(struct acpi_device *device, int type);
static int acpi_thermal_resume(struct acpi_device *device);
@@ -343,9 +347,16 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
/* Passive: Processors (optional) */
- status =
- acpi_evaluate_integer(tz->device->handle, "_PSV", NULL,
- &tz->trips.passive.temperature);
+ if (psv == -1) {
+ status = AE_SUPPORT;
+ } else if (psv > 0) {
+ tz->trips.passive.temperature = CELSIUS_TO_KELVIN(psv);
+ status = AE_OK;
+ } else {
+ status = acpi_evaluate_integer(tz->device->handle,
+ "_PSV", NULL, &tz->trips.passive.temperature);
+ }
+
if (ACPI_FAILURE(status)) {
tz->trips.passive.flags.valid = 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No passive threshold\n"));