1 files changed, 9 insertions, 0 deletions

diff --git a/sys/boot/kshim/bsd_kernel.c b/sys/boot/kshim/bsd_kernel.c
index d41b9f4dc0de6..eaa437cb23a2e 100644
--- a/sys/boot/kshim/bsd_kernel.c
+++ b/sys/boot/kshim/bsd_kernel.c
@@ -138,6 +138,7 @@ cv_timedwait(struct cv *cv, struct mtx *mtx, int timo)
 {
 	int start = ticks;
 	int delta;
+	int time = 0;
 
 	if (cv->sleeping)
 		return (EWOULDBLOCK);	/* not allowed */
@@ -154,6 +155,14 @@ cv_timedwait(struct cv *cv, struct mtx *mtx, int timo)
 
 		usb_idle();
 
+		if (++time >= (1000000 / hz)) {
+			time = 0;
+			callout_process(1);
+		}
+
+		/* Sleep for 1 us */
+		delay(1);
+
 		mtx_lock(mtx);
 	}