3 files changed, 35 insertions, 2 deletions

diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index 9edf9806cff9..8b89e15bcf32 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -613,6 +613,30 @@ struct wacom_usbdev_data {
 static LIST_HEAD(wacom_udev_list);
 static DEFINE_MUTEX(wacom_udev_list_lock);
 
+static struct usb_device *wacom_get_sibling(struct usb_device *dev, int vendor, int product)
+{
+        int port1;
+        struct usb_device *sibling;
+
+        if (vendor == 0 && product == 0)
+                return dev;
+
+        if (dev->parent == NULL)
+                return NULL;
+
+        usb_hub_for_each_child(dev->parent, port1, sibling) {
+                struct usb_device_descriptor *d;
+                if (sibling == NULL)
+                        continue;
+
+                d = &sibling->descriptor;
+                if (d->idVendor == vendor && d->idProduct == product)
+                        return sibling;
+        }
+
+        return NULL;
+}
+
 static struct wacom_usbdev_data *wacom_get_usbdev_data(struct usb_device *dev)
 {
         struct wacom_usbdev_data *data;
@@ -1257,13 +1281,19 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
         strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
 
         if (features->quirks & WACOM_QUIRK_MULTI_INPUT) {
+                struct usb_device *other_dev;
+
                 /* Append the device type to the name */
                 strlcat(wacom_wac->name,
                         features->device_type == BTN_TOOL_PEN ?
                                 " Pen" : " Finger",
                         sizeof(wacom_wac->name));
 
-                error = wacom_add_shared_data(wacom_wac, dev);
+
+                other_dev = wacom_get_sibling(dev, features->oVid, features->oPid);
+                if (other_dev == NULL || wacom_get_usbdev_data(other_dev) == NULL)
+                        other_dev = dev;
+                error = wacom_add_shared_data(wacom_wac, other_dev);
                 if (error)
                         goto fail3;
         }
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index c3468c8dbd89..21d1f4eaff53 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -1340,7 +1340,8 @@ void wacom_setup_device_quirks(struct wacom_features *features)
 
         /* these device have multiple inputs */
         if (features->type >= WIRELESS ||
-            (features->type >= INTUOS5S && features->type <= INTUOS5L))
+            (features->type >= INTUOS5S && features->type <= INTUOS5L) ||
+            (features->oVid && features->oPid))
                 features->quirks |= WACOM_QUIRK_MULTI_INPUT;
 
         /* quirk for bamboo touch with 2 low res touches */
diff --git a/drivers/input/tablet/wacom_wac.h b/drivers/input/tablet/wacom_wac.h
index 96c185cc301e..3f926ec19ef9 100644
--- a/drivers/input/tablet/wacom_wac.h
+++ b/drivers/input/tablet/wacom_wac.h
@@ -109,6 +109,8 @@ struct wacom_features {
         int distance_fuzz;
         unsigned quirks;
         unsigned touch_max;
+        int oVid;
+        int oPid;
 };
 
 struct wacom_shared {