diff --git a/drivers/clocksource/mvebu.c b/drivers/clocksource/mvebu.c
index 2b48a5c..8bedd99 100644
--- a/drivers/clocksource/mvebu.c
+++ b/drivers/clocksource/mvebu.c
@@ -42,7 +42,7 @@
 
 uint64_t mvebu_clocksource_read(void)
 {
-	return __raw_readl(timer_base + TIMER0_VAL_OFF);
+	return 0 - __raw_readl(timer_base + TIMER0_VAL_OFF);
 }
 
 static struct clocksource cs = {
diff --git a/drivers/clocksource/orion.c b/drivers/clocksource/orion.c
index 604b414..e3db845 100644
--- a/drivers/clocksource/orion.c
+++ b/drivers/clocksource/orion.c
@@ -34,7 +34,7 @@
 
 static uint64_t orion_clocksource_read(void)
 {
-	return __raw_readl(timer_base + TIMER0_VAL);
+	return 0 - __raw_readl(timer_base + TIMER0_VAL);
 }
 
 static struct clocksource clksrc = {