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-rw-r--r--drivers/input/touchscreen/ad7877.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c
index 96c0a0d4b69c..b7de78e82737 100644
--- a/drivers/input/touchscreen/ad7877.c
+++ b/drivers/input/touchscreen/ad7877.c
@@ -360,6 +360,13 @@ static int ad7877_rx(struct ad7877 *ts)
Rt /= z1;
Rt = (Rt + 2047) >> 12;
+ /*
+ * Sample found inconsistent, pressure is beyond
+ * the maximum. Don't report it to user space.
+ */
+ if (Rt > ts->pressure_max)
+ return -EINVAL;
+
if (!timer_pending(&ts->timer))
input_report_key(input_dev, BTN_TOUCH, 1);