thermal: int340x: Add NULL check for adev

JIRA: https://issues.redhat.com/browse/RHEL-110837

commit 2542a3f
Author: Chenyuan Yang <chenyuan0y@gmail.com>
Date:   Wed Mar 12 23:36:11 2025 -0500

    thermal: int340x: Add NULL check for adev

    Not all devices have an ACPI companion fwnode, so adev might be NULL.
    This is similar to the commit cd2fd6e
    ("platform/x86: int3472: Check for adev == NULL").

    Add a check for adev not being set and return -ENODEV in that case to
    avoid a possible NULL pointer deref in int3402_thermal_probe().

    Note, under the same directory, int3400_thermal_probe() has such a
    check.

    Fixes: 77e337c ("Thermal: introduce INT3402 thermal driver")
    Signed-off-by: Chenyuan Yang <chenyuan0y@gmail.com>
    Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
    Link: https://patch.msgid.link/20250313043611.1212116-1-chenyuan0y@gmail.com
    [ rjw: Subject edit, added Fixes: ]
    Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Signed-off-by: Steve Best <sbest@redhat.com>

Author: sfbest

drivers/thermal/intel/int340x_thermal/int3402_thermal.c

@@ -45,6 +45,9 @@ static int int3402_thermal_probe(struct platform_device *pdev)
 	struct int3402_thermal_data *d;
 	int ret;
 
+	if (!adev)
+		return -ENODEV;
+
 	if (!acpi_has_method(adev->handle, "_TMP"))
 		return -ENODEV;