[PATCH 2/5] hwmon: (hp-wmi-sensors) Check if WMI event data exists

[Armin Wolf]

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.

Signed-off-by: Armin Wolf <W_Armin@xxxxxx>
---
 drivers/hwmon/hp-wmi-sensors.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/hwmon/hp-wmi-sensors.c b/drivers/hwmon/hp-wmi-sensors.c
index 6892518d537c..d6bdad26feb1 100644
--- a/drivers/hwmon/hp-wmi-sensors.c
+++ b/drivers/hwmon/hp-wmi-sensors.c
@@ -1628,6 +1628,9 @@ static void hp_wmi_notify(union acpi_object *wobj, void *context)
 	 * HPBIOS_BIOSEvent instance.
 	 */

+	if (!wobj)
+		return;
+
 	mutex_lock(&state->lock);

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