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thermal: int340x: Add NULL check for adev

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[ Upstream commit 2542a3f70e563a9e70e7ded314286535a3321bdb ]

Not all devices have an ACPI companion fwnode, so adev might be NULL.
This is similar to the commit cd2fd6eab480
("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: 77e337c6e2 ("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: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chenyuan Yang 2025-03-12 23:36:11 -05:00 committed by Greg Kroah-Hartman
parent 0e44e88754
commit 6a810c462f
1 changed files with 3 additions and 0 deletions
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3
drivers/thermal/intel/int340x_thermal/int3402_thermal.c
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@ -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;