Fix missing casts that can cause boot problems on 32bit systems,
most easily observed with Xen systems. This issue was introduced
w/ 1e75fa8be9fb61e1af46b5b3b176347a4c958ca1.

Cc: Ingo Molnar <mi...@kernel.org>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Prarit Bhargava <pra...@redhat.com>
Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
Reported-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
Tested-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
Signed-off-by: John Stultz <john.stu...@linaro.org>
---
 kernel/time/timekeeping.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index f045cc5..cf364db 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -108,13 +108,13 @@ static struct timespec tk_xtime(struct timekeeper *tk)
 static void tk_set_xtime(struct timekeeper *tk, const struct timespec *ts)
 {
        tk->xtime_sec = ts->tv_sec;
-       tk->xtime_nsec = ts->tv_nsec << tk->shift;
+       tk->xtime_nsec = (u64)ts->tv_nsec << tk->shift;
 }
 
 static void tk_xtime_add(struct timekeeper *tk, const struct timespec *ts)
 {
        tk->xtime_sec += ts->tv_sec;
-       tk->xtime_nsec += ts->tv_nsec << tk->shift;
+       tk->xtime_nsec += (u64)ts->tv_nsec << tk->shift;
 }
 
 /**
-- 
1.7.9.5

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