diff options
| -rw-r--r-- | drivers/hid/hid-multitouch.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 3d664d01305e..2b8ff18d3713 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -357,8 +357,19 @@ static void mt_feature_mapping(struct hid_device *hdev, break; } - td->inputmode = field->report->id; - td->inputmode_index = usage->usage_index; + if (td->inputmode < 0) { + td->inputmode = field->report->id; + td->inputmode_index = usage->usage_index; + } else { + /* + * Some elan panels wrongly declare 2 input mode + * features, and silently ignore when we set the + * value in the second field. Skip the second feature + * and hope for the best. + */ + dev_info(&hdev->dev, + "Ignoring the extra HID_DG_INPUTMODE\n"); + } break; case HID_DG_CONTACTMAX: |