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

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[ Upstream commit a54da9df75 ]

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: 23902f98f8 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Armin Wolf 2024-09-01 05:10:51 +02:00 committed by Greg Kroah-Hartman
parent ed60aab606
commit 217539e994
1 changed files with 2 additions and 0 deletions
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2
drivers/hwmon/hp-wmi-sensors.c
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@ -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) {