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126 lines
3.2 KiB
126 lines
3.2 KiB
From: Thomas Renninger <trenn@suse.de>
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Subject: Avoid critical temp shutdowns on specific ThinkPad T4x(p) and R40
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References: https://bugzilla.novell.com/show_bug.cgi?id=333043
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Patch-mainline: not yet
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---
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drivers/acpi/thermal.c | 93 +++++++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 93 insertions(+)
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--- a/drivers/acpi/thermal.c
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+++ b/drivers/acpi/thermal.c
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@@ -41,6 +41,7 @@
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#include <linux/kmod.h>
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#include <linux/reboot.h>
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#include <linux/device.h>
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+#include <linux/dmi.h>
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#include <asm/uaccess.h>
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#include <linux/thermal.h>
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#include <acpi/acpi_bus.h>
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@@ -984,6 +985,86 @@ static void acpi_thermal_guess_offset(st
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tz->kelvin_offset = 2732;
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}
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+static struct dmi_system_id thermal_psv_dmi_table[] = {
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+ {
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+ .ident = "IBM ThinkPad T41",
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+ .matches = {
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+ DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
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+ DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad T41"),
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+ },
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+ },
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+ {
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+ .ident = "IBM ThinkPad T42",
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+ .matches = {
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+ DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
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+ DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad T42"),
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+ },
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+ },
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+ {
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+ .ident = "IBM ThinkPad T43",
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+ .matches = {
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+ DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
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+ DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad T43"),
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+ },
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+ },
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+ {
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+ .ident = "IBM ThinkPad T41p",
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+ .matches = {
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+ DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
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+ DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad T41p"),
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+ },
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+ },
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+ {
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+ .ident = "IBM ThinkPad T42p",
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+ .matches = {
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+ DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
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+ DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad T42p"),
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+ },
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+ },
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+ {
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+ .ident = "IBM ThinkPad T43p",
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+ .matches = {
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+ DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
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+ DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad T43p"),
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+ },
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+ },
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+ {
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+ .ident = "IBM ThinkPad R40",
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+ .matches = {
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+ DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
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+ DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad R40"),
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+ },
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+ },
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+ {
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+ .ident = "IBM ThinkPad R50p",
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+ .matches = {
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+ DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
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+ DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad R50p"),
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+ },
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+ },
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+ {},
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+};
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+
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+static int acpi_thermal_set_polling(struct acpi_thermal *tz, int seconds)
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+{
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+ if (!tz)
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+ return -EINVAL;
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+
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+ /* Convert value to deci-seconds */
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+ tz->polling_frequency = seconds * 10;
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+
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+ tz->thermal_zone->polling_delay = seconds * 1000;
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+
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+ if (tz->tz_enabled)
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+ thermal_zone_device_update(tz->thermal_zone);
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+
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+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
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+ "Polling frequency set to %lu seconds\n",
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+ tz->polling_frequency/10));
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+
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+ return 0;
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+}
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+
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static int acpi_thermal_add(struct acpi_device *device)
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{
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int result = 0;
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@@ -1015,6 +1096,18 @@ static int acpi_thermal_add(struct acpi_
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if (result)
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goto free_memory;
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+ if (dmi_check_system(thermal_psv_dmi_table)) {
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+ if (tz->trips.passive.flags.valid &&
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+ tz->trips.passive.temperature > CELSIUS_TO_KELVIN(85)) {
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+ printk (KERN_INFO "Adjust passive trip point from %lu"
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+ " to %lu\n",
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+ KELVIN_TO_CELSIUS(tz->trips.passive.temperature),
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+ KELVIN_TO_CELSIUS(tz->trips.passive.temperature - 150));
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+ tz->trips.passive.temperature -= 150;
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+ acpi_thermal_set_polling(tz, 5);
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+ }
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+ }
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+
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printk(KERN_INFO PREFIX "%s [%s] (%ld C)\n",
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acpi_device_name(device), acpi_device_bid(device),
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KELVIN_TO_CELSIUS(tz->temperature));
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