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sysfs_get_idlestate_count() returns an unsigned int. Returning -ENODEV is not the right thing to do here, and in any case is handled the same way as if there are no states found. Signed-off-by: Prarit Bhargava <[email protected]> Acked-by: Thomas Renninger <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>