diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cq.c b/drivers/net/ethernet/mellanox/mlx5/core/cq.c
index 4477a590b308..1a6f1f14da97 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/cq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cq.c
@@ -90,8 +90,7 @@ int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
 			u32 *in, int inlen, u32 *out, int outlen)
 {
 	int eqn = MLX5_GET(cqc, MLX5_ADDR_OF(create_cq_in, in, cq_context), c_eqn);
-	u32 dout[MLX5_ST_SZ_DW(destroy_cq_out)];
-	u32 din[MLX5_ST_SZ_DW(destroy_cq_in)];
+	u32 din[MLX5_ST_SZ_DW(destroy_cq_in)] = {};
 	struct mlx5_eq_comp *eq;
 	int err;
 
@@ -141,20 +140,17 @@ int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
 err_cq_add:
 	mlx5_eq_del_cq(&eq->core, cq);
 err_cmd:
-	memset(din, 0, sizeof(din));
-	memset(dout, 0, sizeof(dout));
 	MLX5_SET(destroy_cq_in, din, opcode, MLX5_CMD_OP_DESTROY_CQ);
 	MLX5_SET(destroy_cq_in, din, cqn, cq->cqn);
 	MLX5_SET(destroy_cq_in, din, uid, cq->uid);
-	mlx5_cmd_exec(dev, din, sizeof(din), dout, sizeof(dout));
+	mlx5_cmd_exec_in(dev, destroy_cq, din);
 	return err;
 }
 EXPORT_SYMBOL(mlx5_core_create_cq);
 
 int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
 {
-	u32 out[MLX5_ST_SZ_DW(destroy_cq_out)] = {0};
-	u32 in[MLX5_ST_SZ_DW(destroy_cq_in)] = {0};
+	u32 in[MLX5_ST_SZ_DW(destroy_cq_in)] = {};
 	int err;
 
 	mlx5_eq_del_cq(mlx5_get_async_eq(dev), cq);
@@ -163,7 +159,7 @@ int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
 	MLX5_SET(destroy_cq_in, in, opcode, MLX5_CMD_OP_DESTROY_CQ);
 	MLX5_SET(destroy_cq_in, in, cqn, cq->cqn);
 	MLX5_SET(destroy_cq_in, in, uid, cq->uid);
-	err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	err = mlx5_cmd_exec_in(dev, destroy_cq, in);
 	if (err)
 		return err;
 
@@ -178,24 +174,22 @@ int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
 EXPORT_SYMBOL(mlx5_core_destroy_cq);
 
 int mlx5_core_query_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
-		       u32 *out, int outlen)
+		       u32 *out)
 {
-	u32 in[MLX5_ST_SZ_DW(query_cq_in)] = {0};
+	u32 in[MLX5_ST_SZ_DW(query_cq_in)] = {};
 
 	MLX5_SET(query_cq_in, in, opcode, MLX5_CMD_OP_QUERY_CQ);
 	MLX5_SET(query_cq_in, in, cqn, cq->cqn);
-	return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
+	return mlx5_cmd_exec_inout(dev, query_cq, in, out);
 }
 EXPORT_SYMBOL(mlx5_core_query_cq);
 
 int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
 			u32 *in, int inlen)
 {
-	u32 out[MLX5_ST_SZ_DW(modify_cq_out)] = {0};
-
 	MLX5_SET(modify_cq_in, in, opcode, MLX5_CMD_OP_MODIFY_CQ);
 	MLX5_SET(modify_cq_in, in, uid, cq->uid);
-	return mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
+	return mlx5_cmd_exec_in(dev, modify_cq, in);
 }
 EXPORT_SYMBOL(mlx5_core_modify_cq);
 
@@ -204,7 +198,7 @@ int mlx5_core_modify_cq_moderation(struct mlx5_core_dev *dev,
 				   u16 cq_period,
 				   u16 cq_max_count)
 {
-	u32 in[MLX5_ST_SZ_DW(modify_cq_in)] = {0};
+	u32 in[MLX5_ST_SZ_DW(modify_cq_in)] = {};
 	void *cqc;
 
 	MLX5_SET(modify_cq_in, in, cqn, cq->cqn);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c b/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c
index 65fef5a86644..c05e6a2c9126 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c
@@ -333,7 +333,7 @@ static u64 cq_read_field(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
 	if (!out)
 		return param;
 
-	err = mlx5_core_query_cq(dev, cq, out, outlen);
+	err = mlx5_core_query_cq(dev, cq, out);
 	if (err) {
 		mlx5_core_warn(dev, "failed to query cq\n");
 		goto out;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/health.c b/drivers/net/ethernet/mellanox/mlx5/core/en/health.c
index 3a199a03d929..7283443868f3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/health.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/health.c
@@ -43,7 +43,7 @@ int mlx5e_reporter_cq_diagnose(struct mlx5e_cq *cq, struct devlink_fmsg *fmsg)
 	void *cqc;
 	int err;
 
-	err = mlx5_core_query_cq(priv->mdev, &cq->mcq, out, sizeof(out));
+	err = mlx5_core_query_cq(priv->mdev, &cq->mcq, out);
 	if (err)
 		return err;
 
diff --git a/include/linux/mlx5/cq.h b/include/linux/mlx5/cq.h
index 40748fc1b11b..b5a9399e07ee 100644
--- a/include/linux/mlx5/cq.h
+++ b/include/linux/mlx5/cq.h
@@ -188,7 +188,7 @@ int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
 			u32 *in, int inlen, u32 *out, int outlen);
 int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
 int mlx5_core_query_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
-		       u32 *out, int outlen);
+		       u32 *out);
 int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
 			u32 *in, int inlen);
 int mlx5_core_modify_cq_moderation(struct mlx5_core_dev *dev,
