[PATCH 6/7] clock: fix possible error on overflow in is_timeout

[Wolfram Sang]

From: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>

Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
Signed-off-by: Wolfram Sang <w.sang at pengutronix.de>
---
 common/clock.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/common/clock.c b/common/clock.c
index 8eeb917..15df0ab 100644
--- a/common/clock.c
+++ b/common/clock.c
@@ -84,8 +84,7 @@ uint32_t clocksource_hz2mult(uint32_t hz, uint32_t shift_constant)
 
 int is_timeout(uint64_t start_ns, uint64_t time_offset_ns)
 {
-
-	if (start_ns + time_offset_ns < get_time_ns())
+	if ((int64_t)(start_ns + time_offset_ns - get_time_ns()) < 0)
 		return 1;
 	else
 		return 0;
-- 
1.7.0