diff --git a/[refs] b/[refs]
index f761512cfe48..d2c5307f77ad 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ae2aa9073acf8f810f18297f586e03d4b2b97588
+refs/heads/master: 0c48d314b16f485e89e0f13fa37c9bd98b6a064d
diff --git a/trunk/arch/arm/mach-pxa/generic.c b/trunk/arch/arm/mach-pxa/generic.c
index 6ae605857ca9..9de1278d234f 100644
--- a/trunk/arch/arm/mach-pxa/generic.c
+++ b/trunk/arch/arm/mach-pxa/generic.c
@@ -76,7 +76,9 @@ unsigned long long sched_clock(void)
 	/*
 	 * 96-bit math to perform tick * NSEC_PER_SEC / CLOCK_TICK_RATE for
 	 * any value of CLOCK_TICK_RATE. Max value is in the 80 thousand
-	 * years range which is nice, but with higher computation cost.
+	 * years range and truncation to unsigned long long limits it to
+	 * sched_clock's max range of ~584 years.  This is nice but with
+	 * higher computation cost.
 	 */
 	{
 		union {