int340x_thermal/processor_thermal_device: return failure when
there is no ACPI device object processor_thermal_device driver needs ACPI support to work. Thus, the driver probing should fail when there is no ACPI device object asscociated. This fixes a NULL pointer dereference when the driver is loaded with INT340X feature disabled in BIOS. Reported-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Tested-by: Chen Yu <yu.c.chen@intel.com>
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@ -130,6 +130,8 @@ static int proc_thermal_add(struct device *dev,
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int ret;
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adev = ACPI_COMPANION(dev);
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if (!adev)
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return -ENODEV;
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status = acpi_evaluate_object(adev->handle, "PPCC", NULL, &buf);
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if (ACPI_FAILURE(status))
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