netdev - [PATCH net-next] net/mlx5: fix 32bit build

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Date:   Tue,  5 Jul 2022 09:17:04 +0200
From:   Paolo Abeni <pabeni@...hat.com>
To:     netdev@...r.kernel.org
Cc:     Saeed Mahameed <saeedm@...dia.com>,
        Leon Romanovsky <leon@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Jianbo Liu <jianbol@...dia.com>, Roi Dayan <roid@...dia.com>,
        Ariel Levkovich <lariel@...dia.com>
Subject: [PATCH net-next] net/mlx5: fix 32bit build

We can't use the division operator on 64 bits integers, that breaks
32 bits build. Instead use the relevant helper.

Fixes: 6ddac26cf763 ("net/mlx5e: Add support to modify hardware flow meter parameters")
Signed-off-by: Paolo Abeni <pabeni@...hat.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en/tc/meter.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/meter.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/meter.c
index 28962b2134c7..ca33f673396f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/meter.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/meter.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
 // Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 
+#include <linux/math64.h>
 #include "lib/aso.h"
 #include "en/tc/post_act.h"
 #include "meter.h"
@@ -61,7 +62,7 @@ mlx5e_flow_meter_cir_calc(u64 cir, u8 *man, u8 *exp)
 		m = cir << e;
 		if ((s64)m < 0) /* overflow */
 			break;
-		m /= MLX5_CONST_CIR;
+		m = div64_u64(m, MLX5_CONST_CIR);
 		if (m > 0xFF) /* man width 8 bit */
 			continue;
 		_cir = MLX5_CALC_CIR(m, e);
-- 
2.35.3