1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index a20fc604ffd8..60e85f3861ee 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1150,8 +1150,30 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 }
 
 #ifdef CONFIG_PM
+static void mt_release_contacts(struct hid_device *hid)
+{
+        struct hid_input *hidinput;
+
+        list_for_each_entry(hidinput, &hid->inputs, list) {
+                struct input_dev *input_dev = hidinput->input;
+                struct input_mt *mt = input_dev->mt;
+                int i;
+
+                if (mt) {
+                        for (i = 0; i < mt->num_slots; i++) {
+                                input_mt_slot(input_dev, i);
+                                input_mt_report_slot_state(input_dev,
+                                                           MT_TOOL_FINGER,
+                                                           false);
+                        }
+                        input_sync(input_dev);
+                }
+        }
+}
+
 static int mt_reset_resume(struct hid_device *hdev)
 {
+        mt_release_contacts(hdev);
         mt_set_maxcontacts(hdev);
         mt_set_input_mode(hdev);
         return 0;