---

yaml
---
r: 343079
b: refs/heads/master
c: afbcb04
h: refs/heads/master
i:
  343077: ee1af8e
  343075: 414c058
  343071: 0f338e7
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 54f4c0c3e9d9ad50bf58a4f7c2bbdfb3fa4ab3a7
+refs/heads/master: afbcb04c181f36634f4af207bb0c9cc46b7405e4

trunk/drivers/hid/hid-multitouch.c

@@ -121,6 +121,7 @@ struct mt_device {
 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS	0x0109
 
 #define MT_DEFAULT_MAXCONTACT	10
+#define MT_MAX_MAXCONTACT	250
 
 #define MT_USB_DEVICE(v, p)	HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 #define MT_BT_DEVICE(v, p)	HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
@@ -282,6 +283,9 @@ static void mt_feature_mapping(struct hid_device *hdev,
 	case HID_DG_CONTACTMAX:
 		td->maxcontact_report_id = field->report->id;
 		td->maxcontacts = field->value[0];
+		if (!td->maxcontacts &&
+		    field->logical_maximum <= MT_MAX_MAXCONTACT)
+			td->maxcontacts = field->logical_maximum;
 		if (td->mtclass.maxcontacts)
 			/* check if the maxcontacts is given by the class */
 			td->maxcontacts = td->mtclass.maxcontacts;