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No one checks the return value of debugfs_create_u32(), as it's not needed, so make the return value void, so that no one tries to do so in the future. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20200416145448.GA1380878@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>