[PATCH 1/2] cyclic: Fix rollover every 72 min on 32 bits platforms

[Patrice Chotard]

On 32 bits platforms, timer_get_us() returns an unsigned long which
is a 32 bits. timer_get_us() wraps around every 72 minutes
(2 ^ 32 / 1000000 =~ 4295 sec =~ 72 min).

So the test "if time_after_eq64(now, cyclic->next_call)" is no more
true when cyclic->next_call becomes above 32 bits max value (4294967295).

At this point after 72 min, no more cyclic function are
executed included watchdog one.

Instead of using timer_get_us(), use get_timer_us() which returns a
uint64_t, this allows a rollover every 584942 years.

Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
---

 common/cyclic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common/cyclic.c b/common/cyclic.c
index 196797fd61e..e3f03a19d55 100644
--- a/common/cyclic.c
+++ b/common/cyclic.c
@@ -61,7 +61,7 @@ static void cyclic_run(void)
 		 * Check if this cyclic function needs to get called, e.g.
 		 * do not call the cyclic func too often
 		 */
-		now = timer_get_us();
+		now = get_timer_us(0);
 		if (time_after_eq64(now, cyclic->next_call)) {
 			/* Call cyclic function and account it's cpu-time */
 			cyclic->next_call = now + cyclic->delay_us;
-- 
2.25.1