diff options
Diffstat (limited to 'drivers/acpi/button.c')
| -rw-r--r-- | drivers/acpi/button.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index bf8e4d371fa7..e1eee7a60fad 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -30,6 +30,7 @@ #include <linux/input.h> #include <linux/slab.h> #include <linux/acpi.h> +#include <linux/dmi.h> #include <acpi/button.h> #define PREFIX "ACPI: " @@ -76,6 +77,22 @@ static const struct acpi_device_id button_device_ids[] = { }; MODULE_DEVICE_TABLE(acpi, button_device_ids); +/* + * Some devices which don't even have a lid in anyway have a broken _LID + * method (e.g. pointing to a floating gpio pin) causing spurious LID events. + */ +static const struct dmi_system_id lid_blacklst[] = { + { + /* GP-electronic T701 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Insyde"), + DMI_MATCH(DMI_PRODUCT_NAME, "T701"), + DMI_MATCH(DMI_BIOS_VERSION, "BYT70A.YNCHENG.WIN.007"), + }, + }, + {} +}; + static int acpi_button_add(struct acpi_device *device); static int acpi_button_remove(struct acpi_device *device); static void acpi_button_notify(struct acpi_device *device, u32 event); @@ -210,6 +227,8 @@ static int acpi_lid_notify_state(struct acpi_device *device, int state) } /* Send the platform triggered reliable event */ if (do_update) { + acpi_handle_debug(device->handle, "ACPI LID %s\n", + state ? "open" : "closed"); input_report_switch(button->input, SW_LID, !state); input_sync(button->input); button->last_state = !!state; @@ -473,6 +492,9 @@ static int acpi_button_add(struct acpi_device *device) char *name, *class; int error; + if (!strcmp(hid, ACPI_BUTTON_HID_LID) && dmi_check_system(lid_blacklst)) + return -ENODEV; + button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL); if (!button) return -ENOMEM; |