5.4-stable review patch. If anyone has any objections, please let me know.
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From: Chenyuan Yang chenyuan0y@gmail.com
[ 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: 77e337c6e23e ("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 --- drivers/thermal/intel/int340x_thermal/int3402_thermal.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/thermal/intel/int340x_thermal/int3402_thermal.c b/drivers/thermal/intel/int340x_thermal/int3402_thermal.c index 43fa351e2b9ec..b7fdf25bfd237 100644 --- a/drivers/thermal/intel/int340x_thermal/int3402_thermal.c +++ b/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;