Sometimes we won't need all the information from
get_xtime_and_monotonic_and_sleep_offset(),
so let's check the params before assign the value to them.
Signed-off-by: Neil Zhang <zhan...@marvell.com>
---
kernel/time/timekeeping.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 0aa4ce8..f0e8f53 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1598,9 +1598,12 @@ void get_xtime_and_monotonic_and_sleep_offset(struct
timespec *xtim,
do {
seq = read_seqcount_begin(&timekeeper_seq);
- *xtim = tk_xtime(tk);
- *wtom = tk->wall_to_monotonic;
- *sleep = tk->total_sleep_time;
+ if (xtim)
+ *xtim = tk_xtime(tk);
+ if (wtom)
+ *wtom = tk->wall_to_monotonic;
+ if (sleep)
+ *sleep = tk->total_sleep_time;
} while (read_seqcount_retry(&timekeeper_seq, seq));
}
--
1.7.9.5
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