diff options
Diffstat (limited to 'drivers/acpi/processor_pdc.c')
| -rw-r--r-- | drivers/acpi/processor_pdc.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/acpi/processor_pdc.c b/drivers/acpi/processor_pdc.c index 7d4ee394d0b3..7247819dbd80 100644 --- a/drivers/acpi/processor_pdc.c +++ b/drivers/acpi/processor_pdc.c @@ -144,6 +144,29 @@ void acpi_processor_set_pdc(acpi_handle handle) } EXPORT_SYMBOL_GPL(acpi_processor_set_pdc); +static int early_pdc_optin; +static int set_early_pdc_optin(const struct dmi_system_id *id) +{ + early_pdc_optin = 1; + return 0; +} + +static struct dmi_system_id __cpuinitdata early_pdc_optin_table[] = { + { + set_early_pdc_optin, "HP Envy", { + DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Envy") }, NULL}, + { + set_early_pdc_optin, "HP Pavilion dv6", { + DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv6") }, NULL}, + { + set_early_pdc_optin, "HP Pavilion dv7", { + DMI_MATCH(DMI_BIOS_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv7") }, NULL}, + {}, +}; + static acpi_status early_init_pdc(acpi_handle handle, u32 lvl, void *context, void **rv) { @@ -159,6 +182,13 @@ void __init acpi_early_processor_set_pdc(void) */ dmi_check_system(processor_idle_dmi_table); + /* + * Allow systems to opt-in to early _PDC evaluation. + */ + dmi_check_system(early_pdc_optin_table); + if (!early_pdc_optin) + return; + acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, early_init_pdc, NULL, NULL, NULL); |