Have some leeway before starting to throttle hfa dies.
diff --git a/driver-hashfast.c b/driver-hashfast.c
index 3e80615..84107ed 100644
--- a/driver-hashfast.c
+++ b/driver-hashfast.c
@@ -1121,6 +1121,9 @@ fan_only:
/* Already at min speed */
if (hdd->hash_clock == HFA_CLOCK_MIN)
continue;
+ /* Have some leeway before throttling speed */
+ if (hdd->temp < opt_hfa_target + HFA_TEMP_HYSTERESIS)
+ break;
hfa_decrease_clock(hashfast, info, i);
} else {
/* Temp below target range.*/