diff options
| -rw-r--r-- | drivers/acpi/power.c | 19 | ||||
| -rw-r--r-- | drivers/acpi/x86/utils.c | 10 |
2 files changed, 29 insertions, 0 deletions
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index 23507d29f000..c2c70139c4f1 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -23,6 +23,7 @@ #define pr_fmt(fmt) "ACPI: PM: " fmt +#include <linux/dmi.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> @@ -1022,6 +1023,21 @@ void acpi_resume_power_resources(void) } #endif +static const struct dmi_system_id dmi_leave_unused_power_resources_on[] = { + { + /* + * The Toshiba Click Mini has a CPR3 power-resource which must + * be on for the touchscreen to work, but which is not in any + * _PR? lists. The other 2 affected power-resources are no-ops. + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), + DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE Click Mini L9W-B"), + }, + }, + {} +}; + /** * acpi_turn_off_unused_power_resources - Turn off power resources not in use. */ @@ -1029,6 +1045,9 @@ void acpi_turn_off_unused_power_resources(void) { struct acpi_power_resource *resource; + if (dmi_check_system(dmi_leave_unused_power_resources_on)) + return; + mutex_lock(&power_resource_list_lock); list_for_each_entry_reverse(resource, &acpi_power_resource_list, list_node) { diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c index ba420a28a4aa..9c2d6f35f88a 100644 --- a/drivers/acpi/x86/utils.c +++ b/drivers/acpi/x86/utils.c @@ -143,6 +143,16 @@ static const struct override_status_id override_status_ids[] = { DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"), DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"), }), + + /* + * The LSM303D on the Lenovo Yoga Tablet 2 series is present + * as both ACCL0001 and MAGN0001. As we can only ever register an + * i2c client for one of them, ignore MAGN0001. + */ + NOT_PRESENT_ENTRY_HID("MAGN0001", "1", ATOM_SILVERMONT, { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_FAMILY, "YOGATablet2"), + }), }; bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status) |