From: Armin Wolf <W_Armin@gmx.de>
Date: Sun, 1 Sep 2024 03:10:51 +0000 (+0200)
Subject: hwmon: (hp-wmi-sensors) Check if WMI event data exists
X-Git-Tag: v6.11-rc7~35^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a54da9df75cd;p=thirdparty%2Flinux.git

hwmon: (hp-wmi-sensors) Check if WMI event data exists

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@gmx.de>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Message-ID: <20240901031055.3030-2-W_Armin@gmx.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---

diff --git a/drivers/hwmon/hp-wmi-sensors.c b/drivers/hwmon/hp-wmi-sensors.c
index b5325d0e72b9c..dfa1d6926deac 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) {