[PATCH 4.14 32/46] Input: sun4i-ts - add a check for devm_thermal_zone_of_sensor_register

From: Greg Kroah-Hartman
Date: Tue Jan 28 2020 - 09:00:36 EST


From: Chuhong Yuan <hslester96@xxxxxxxxx>

commit 97e24b095348a15ec08c476423c3b3b939186ad7 upstream.

The driver misses a check for devm_thermal_zone_of_sensor_register().
Add a check to fix it.

Fixes: e28d0c9cd381 ("input: convert sun4i-ts to use devm_thermal_zone_of_sensor_register")
Signed-off-by: Chuhong Yuan <hslester96@xxxxxxxxx>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/input/touchscreen/sun4i-ts.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/input/touchscreen/sun4i-ts.c
+++ b/drivers/input/touchscreen/sun4i-ts.c
@@ -246,6 +246,7 @@ static int sun4i_ts_probe(struct platfor
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct device *hwmon;
+ struct thermal_zone_device *thermal;
int error;
u32 reg;
bool ts_attached;
@@ -365,7 +366,10 @@ static int sun4i_ts_probe(struct platfor
if (IS_ERR(hwmon))
return PTR_ERR(hwmon);

- devm_thermal_zone_of_sensor_register(ts->dev, 0, ts, &sun4i_ts_tz_ops);
+ thermal = devm_thermal_zone_of_sensor_register(ts->dev, 0, ts,
+ &sun4i_ts_tz_ops);
+ if (IS_ERR(thermal))
+ return PTR_ERR(thermal);

writel(TEMP_IRQ_EN(1), ts->base + TP_INT_FIFOC);