Merge tag 'perf-core-for-mingo-4.12-20170503' of git://git.kernel.org/pub/scm/linux...

[karo-tx-linux.git] / drivers / hid / wacom_wac.c

diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index 94250c293be2a18b247e2be006a0e7e4faf4f6f8..c68ac65db7ffec361169c326ede5bbf263a00b1b 100644 (file)
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -2006,7 +2006,7 @@ static void wacom_wac_pen_event(struct hid_device *hdev, struct hid_field *field
                return;
        case HID_DG_TOOLSERIALNUMBER:
                wacom_wac->serial[0] = (wacom_wac->serial[0] & ~0xFFFFFFFFULL);
-               wacom_wac->serial[0] |= value;
+               wacom_wac->serial[0] |= (__u32)value;
                return;
        case WACOM_HID_WD_SENSE:
                wacom_wac->hid_data.sense_state = value;
@@ -2176,6 +2176,16 @@ static void wacom_wac_finger_usage_mapping(struct hid_device *hdev,
                wacom_wac->hid_data.cc_index = field->index;
                wacom_wac->hid_data.cc_value_index = usage->usage_index;
                break;
+       case HID_DG_CONTACTID:
+               if ((field->logical_maximum - field->logical_minimum) < touch_max) {
+                       /*
+                        * The HID descriptor for G11 sensors leaves logical
+                        * maximum set to '1' despite it being a multitouch
+                        * device. Override to a sensible number.
+                        */
+                       field->logical_maximum = 255;
+               }
+               break;
        }
 }