During compilation using W=1 one would get:

drivers/rtc/systohc.c:11: info: Scanning doc for rtc_set_ntp_time
drivers/rtc/systohc.c:23: warning: bad line:  (
Signed-off-by: NMathieu Malaterre <malat@debian.org>
Signed-off-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>