math: Export mul_u64_u64_div_u64

[ Upstream commit bf45947864764548697e7515fe693e10f173f312 ]

Fixes: f51d7bf1dbe5 ("ptp_qoriq: fix overflow in ptp_qoriq_adjfine() u64 calcalation")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/lib/math/div64.c b/lib/math/div64.c
index 3952a07..edd1090 100644 (file)
--- a/lib/math/div64.c
+++ b/lib/math/div64.c
@@ -230,4 +230,5 @@ 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