1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index aac81f40e28e..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);
@@ -475,6 +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;