timekeeping: Use inject_offset in warp_clock

When warping the clock (from a local time RTC), use
timekeeping_inject_offset() to atomically add the offset.

This avoids any minor time error caused by the delay between
reading the time, and then setting the adjusted time.

Signed-off-by: John Stultz <john.stultz@linaro.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/kernel/time.c b/kernel/time.c
index effac571589f..d3617dbd3dca 100644
--- a/kernel/time.c
+++ b/kernel/time.c
@@ -142,9 +142,9 @@ static inline void warp_clock(void)
                 struct timespec adjust;
 
                 persistent_clock_is_local = 1;
-                adjust = current_kernel_time();
-                adjust.tv_sec += sys_tz.tz_minuteswest * 60;
-                do_settimeofday(&adjust);
+                adjust.tv_sec = sys_tz.tz_minuteswest * 60;
+                adjust.tv_nsec = 0;
+                timekeeping_inject_offset(&adjust);
         }
 }