HID: wacom: Properly report negative values from Intuos Pro 2 Bluetooth

[mirror_ubuntu-artful-kernel.git] / drivers / hid / wacom_wac.c

diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index bb17d7bbefd3e7bf033344e7e1bc6b5d5228fd27..d7ca1eb9d559e6c66c9b1690d26914cd7a437b72 100644 (file)
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -1229,9 +1229,9 @@ static void wacom_intuos_pro2_bt_pen(struct wacom_wac *wacom)
                if (range) {
                        input_report_abs(pen_input, ABS_X, get_unaligned_le16(&frame[1]));
                        input_report_abs(pen_input, ABS_Y, get_unaligned_le16(&frame[3]));
-                       input_report_abs(pen_input, ABS_TILT_X, frame[7]);
-                       input_report_abs(pen_input, ABS_TILT_Y, frame[8]);
-                       input_report_abs(pen_input, ABS_Z, get_unaligned_le16(&frame[9]));
+                       input_report_abs(pen_input, ABS_TILT_X, (char)frame[7]);
+                       input_report_abs(pen_input, ABS_TILT_Y, (char)frame[8]);
+                       input_report_abs(pen_input, ABS_Z, (int16_t)get_unaligned_le16(&frame[9]));
                        input_report_abs(pen_input, ABS_WHEEL, get_unaligned_le16(&frame[11]));
                }
                input_report_abs(pen_input, ABS_PRESSURE, get_unaligned_le16(&frame[5]));