src/patches/suse-2.6.27.31/patches.arch/acpi_thermal_passive_blacklist.patch

   1 From: Thomas Renninger <trenn@suse.de>
   2 Subject: Avoid critical temp shutdowns on specific ThinkPad T4x(p) and R40
   3 References: https://bugzilla.novell.com/show_bug.cgi?id=333043
   4
   5 ---
   6  drivers/acpi/thermal.c |   73 +++++++++++++++++++++++++++++++++++++++++++++++++
   7  1 file changed, 73 insertions(+)
   8
   9 --- a/drivers/acpi/thermal.c
  10 +++ b/drivers/acpi/thermal.c
  11 @@ -42,6 +42,7 @@
  12  #include <linux/kmod.h>
  13  #include <linux/seq_file.h>
  14  #include <linux/reboot.h>
  15 +#include <linux/dmi.h>
  16  #include <asm/uaccess.h>
  17  #include <linux/thermal.h>
  18  #include <acpi/acpi_bus.h>
  19 @@ -1640,6 +1641,66 @@ static int acpi_thermal_get_info(struct
  20         return 0;
  21  }
  22
  23 +static struct dmi_system_id thermal_psv_dmi_table[] = {
  24 +       {
  25 +               .ident = "IBM ThinkPad T41",
  26 +               .matches = {
  27 +                       DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
  28 +                       DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad T41"),
  29 +               },
  30 +       },
  31 +       {
  32 +               .ident = "IBM ThinkPad T42",
  33 +               .matches = {
  34 +                       DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
  35 +                       DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad T42"),
  36 +               },
  37 +       },
  38 +       {
  39 +               .ident = "IBM ThinkPad T43",
  40 +               .matches = {
  41 +                       DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
  42 +                       DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad T43"),
  43 +               },
  44 +       },
  45 +       {
  46 +               .ident = "IBM ThinkPad T41p",
  47 +               .matches = {
  48 +                       DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
  49 +                       DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad T41p"),
  50 +               },
  51 +       },
  52 +       {
  53 +               .ident = "IBM ThinkPad T42p",
  54 +               .matches = {
  55 +                       DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
  56 +                       DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad T42p"),
  57 +               },
  58 +       },
  59 +       {
  60 +               .ident = "IBM ThinkPad T43p",
  61 +               .matches = {
  62 +                       DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
  63 +                       DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad T43p"),
  64 +               },
  65 +       },
  66 +       {
  67 +               .ident = "IBM ThinkPad R40",
  68 +               .matches = {
  69 +                       DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
  70 +                       DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad R40"),
  71 +               },
  72 +       },
  73 +       {
  74 +               .ident = "IBM ThinkPad R50p",
  75 +               .matches = {
  76 +                       DMI_MATCH(DMI_BIOS_VENDOR,"IBM"),
  77 +                       DMI_MATCH(DMI_PRODUCT_VERSION,"ThinkPad R50p"),
  78 +               },
  79 +       },
  80 +       {},
  81 +};
  82 +
  83  static int acpi_thermal_add(struct acpi_device *device)
  84  {
  85         int result = 0;
  86 @@ -1670,6 +1731,18 @@ static int acpi_thermal_add(struct acpi_
  87         if (result)
  88                 goto free_memory;
  89
  90 +       if (dmi_check_system(thermal_psv_dmi_table)) {
  91 +               if (tz->trips.passive.flags.valid &&
  92 +                   tz->trips.passive.temperature > CELSIUS_TO_KELVIN(85)) {
  93 +                       printk (KERN_INFO "Adjust passive trip point from %lu"
  94 +                               " to %lu\n",
  95 +                               KELVIN_TO_CELSIUS(tz->trips.passive.temperature),
  96 +                               KELVIN_TO_CELSIUS(tz->trips.passive.temperature - 150));
  97 +                       tz->trips.passive.temperature -= 150;
  98 +                       acpi_thermal_set_polling(tz, 5);
  99 +               }
 100 +       }
 101 +
 102         result = acpi_thermal_add_fs(device);
 103         if (result)
 104                 goto unregister_thermal_zone;