It's only used inside drivers/base/dd.c
Signed-off-by: NJulian Wiedmann <jwi@linux.ibm.com>
Link: https://lore.kernel.org/r/20201123111938.18968-1-jwi@linux.ibm.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>