[PATCH v2 1/5] hwmon: (hp-wmi-sensors) Check if WMI event data exists

[Armin Wolf <W_Armin@xxxxxx>]

The BIOS can choose to return no event data in response to a
WMI event, so the ACPI object passed to the WMI notify handler
can be NULL.

Check for such a situation and ignore the event in such a case.

Fixes: 23902f98f8d4 ("hwmon: add HP WMI Sensors driver")
Signed-off-by: Armin Wolf <W_Armin@xxxxxx>
---
 drivers/hwmon/hp-wmi-sensors.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/hwmon/hp-wmi-sensors.c b/drivers/hwmon/hp-wmi-sensors.c
index b5325d0e72b9..dfa1d6926dea 100644
--- a/drivers/hwmon/hp-wmi-sensors.c
+++ b/drivers/hwmon/hp-wmi-sensors.c
@@ -1637,6 +1637,8 @@ static void hp_wmi_notify(u32 value, void *context)
 		goto out_unlock;

 	wobj = out.pointer;
+	if (!wobj)
+		goto out_unlock;

 	err = populate_event_from_wobj(dev, &event, wobj);
 	if (err) {
--
2.39.2