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An upcoming Dell platform is causing a NULL pointer dereference in dell-wmi-sysman initialization. Validate that the input from BIOS matches correct ACPI types and abort module initialization if it fails. Signed-off-by: Mario Limonciello <[email protected]> Tested-by: Perry Yuan <[email protected]> Link: https://lore.kernel.org/r/[email protected] [[email protected]: Drop redundant release_attributes_data() call] Signed-off-by: Hans de Goede <[email protected]>