From 8af0569b7bfbc1162f4de7a77a77432de2286055 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Tue, 30 Sep 2014 08:27:09 +0200 Subject: clock: make get_time_ns() safe to be called without clocksource make it possible to call get_time_ns() before the clocksource has been registered. Just return 0 in this case which is still better than crashing the system. Signed-off-by: Sascha Hauer --- common/clock.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/common/clock.c b/common/clock.c index 2dae9ff9ad..76ce881067 100644 --- a/common/clock.c +++ b/common/clock.c @@ -44,6 +44,9 @@ uint64_t get_time_ns(void) uint64_t cycle_now, cycle_delta; uint64_t ns_offset; + if (!cs) + return 0; + /* read clocksource: */ cycle_now = cs->read() & cs->mask; -- cgit v1.2.3