diff --git a/crypto/ecc.c b/crypto/ecc.c
index ed1237115066b48b368b15688e6b2343db70d6ac..ad739255951f01da1bf42ce68904a070084f97e2 100644
--- a/crypto/ecc.c
+++ b/crypto/ecc.c
@@ -906,10 +906,11 @@ static void ecc_point_mult(struct ecc_point *result,
 static inline void ecc_swap_digits(const u64 *in, u64 *out,
 				   unsigned int ndigits)
 {
+	const __be64 *src = (__force __be64 *)in;
 	int i;
 
 	for (i = 0; i < ndigits; i++)
-		out[i] = __swab64(in[ndigits - 1 - i]);
+		out[i] = be64_to_cpu(src[ndigits - 1 - i]);
 }
 
 static int __ecc_is_key_valid(const struct ecc_curve *curve,