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-rw-r--r--drivers/input/misc/mma8450.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/input/misc/mma8450.c b/drivers/input/misc/mma8450.c
index 480557f14f23..f3309696d053 100644
--- a/drivers/input/misc/mma8450.c
+++ b/drivers/input/misc/mma8450.c
@@ -123,9 +123,9 @@ static void mma8450_poll(struct input_polled_dev *dev)
if (ret < 0)
return;
- x = ((buf[1] << 4) & 0xff0) | (buf[0] & 0xf);
- y = ((buf[3] << 4) & 0xff0) | (buf[2] & 0xf);
- z = ((buf[5] << 4) & 0xff0) | (buf[4] & 0xf);
+ x = ((int)(s8)buf[1] << 4) | (buf[0] & 0xf);
+ y = ((int)(s8)buf[3] << 4) | (buf[2] & 0xf);
+ z = ((int)(s8)buf[5] << 4) | (buf[4] & 0xf);
input_report_abs(dev->input, ABS_X, x);
input_report_abs(dev->input, ABS_Y, y);