elants_i2c_send() may fail, let's check its return values. The fix does
the check and reports an error message upon the failure.
Signed-off-by: Kangjie Lu <kjlu@xxxxxxx>
---
drivers/input/touchscreen/elants_i2c.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c
index f2cb23121833..cb3c1470bb68 100644
--- a/drivers/input/touchscreen/elants_i2c.c
+++ b/drivers/input/touchscreen/elants_i2c.c
@@ -245,8 +245,14 @@ static int elants_i2c_calibrate(struct elants_data *ts)
ts->state = ELAN_WAIT_RECALIBRATION;
reinit_completion(&ts->cmd_done);
- elants_i2c_send(client, w_flashkey, sizeof(w_flashkey));
- elants_i2c_send(client, rek, sizeof(rek));
+ error = elants_i2c_send(client, w_flashkey, sizeof(w_flashkey));
+ error |= elants_i2c_send(client, rek, sizeof(rek));
+ if (error) {
+ dev_err(&client->dev,
+ "error in sending I2C messages for calibration: %d\n",
+ error);
+ return error;
+ }
enable_irq(client->irq);
--
2.17.2 (Apple Git-113)
