diff --git a/sys/arm/arm/generic_timer.c b/sys/arm/arm/generic_timer.c
--- a/sys/arm/arm/generic_timer.c
+++ b/sys/arm/arm/generic_timer.c
@@ -800,26 +800,18 @@
     BUS_PASS_TIMER + BUS_PASS_ORDER_MIDDLE);
 #endif
 
-static int64_t
+static uint64_t
 arm_tmr_get_counts(int usec)
 {
-	int64_t counts, counts_per_usec;
+	uint64_t counts_per_usec;
+
+	if (usec < 0)
+		return (0);
 
 	/* Get the number of times to count */
 	counts_per_usec = ((arm_tmr_timecount.tc_frequency / 1000000) + 1);
 
-	/*
-	 * Clamp the timeout at a maximum value (about 32 seconds with
-	 * a 66MHz clock). *Nobody* should be delay()ing for anywhere
-	 * near that length of time and if they are, they should be hung
-	 * out to dry.
-	 */
-	if (usec >= (0x80000000U / counts_per_usec))
-		counts = (0x80000000U / counts_per_usec) - 1;
-	else
-		counts = usec * counts_per_usec;
-
-	return counts;
+	return (usec * counts_per_usec);
 }
 
 static void