math: Export mul_u64_u64_div_u64

Fixes: 9f2b87c99768 ("ptp_qoriq: fix overflow in ptp_qoriq_adjfine() u64 calcalation")
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/lib/math/div64.c b/lib/math/div64.c
index 064d68a5391a09da4da883f187075b9bc6056d8a..46866394fc84382cbab511d044103406ffcd0176 100644 (file)
--- a/lib/math/div64.c
+++ b/lib/math/div64.c
@@ -232,4 +232,5 @@ u64 mul_u64_u64_div_u64(u64 a, u64 b, u64 c)
 
        return res + div64_u64(a * b, c);
 }
+EXPORT_SYMBOL(mul_u64_u64_div_u64);
 #endif