HID: lenovo: Fix spurious F23 key press report during resume from suspend

The Ultrabook Keyboard sends a spurious F23 key-press when resuming
from suspend. GNOME uses F23 to toggle the touchpad on/off so this causes
the OSD graphics for the touchpad toggle to show on resume.

The keyboard does not actually have a F23 key, se we can simple fix it
by marking the 0x00070072 HID usage, which normally is F23, to be ignored.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c
index b5122ee4680170da797cabc7259160a728103e61..c6c8e20f3e8d5a046f80d8a95347edf683695695 100644 (file)
--- a/drivers/hid/hid-lenovo.c
+++ b/drivers/hid/hid-lenovo.c
@@ -245,6 +245,13 @@ static int lenovo_input_mapping_tp10_ultrabook_kbd(struct hid_device *hdev,
                }
        }
 
+       /*
+        * The Ultrabook Keyboard sends a spurious F23 key-press when resuming
+        * from suspend and it does not actually have a F23 key, ignore it.
+        */
+       if (usage->hid == 0x00070072)
+               return -1;
+
        return 0;
 }