netdev - [PATCH] net/mlx5: Use kasprintf instead of hand-writing it

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Date:   Sat, 17 Apr 2021 09:16:44 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     saeedm@...dia.com, leon@...nel.org, davem@...emloft.net,
        kuba@...nel.org
Cc:     netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] net/mlx5: Use kasprintf instead of hand-writing it

'kasprintf()' can replace a kmalloc/strcpy/strcat sequence.
It is less verbose and avoid the use of a magic number (64).

Anyway, the underlying 'alloc_workqueue()' would only keep the 24 first
chars (i.e. sizeof(struct workqueue_struct->name) = WQ_NAME_LEN).

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/net/ethernet/mellanox/mlx5/core/health.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/health.c b/drivers/net/ethernet/mellanox/mlx5/core/health.c
index 9ff163c5bcde..a5383e701b4b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/health.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/health.c
@@ -802,12 +802,10 @@ int mlx5_health_init(struct mlx5_core_dev *dev)
 	mlx5_fw_reporters_create(dev);
 
 	health = &dev->priv.health;
-	name = kmalloc(64, GFP_KERNEL);
+	name = kasprintf(GFP_KERNEL, "mlx5_health%s", dev_name(dev->device));
 	if (!name)
 		goto out_err;
 
-	strcpy(name, "mlx5_health");
-	strcat(name, dev_name(dev->device));
 	health->wq = create_singlethread_workqueue(name);
 	kfree(name);
 	if (!health->wq)
-- 
2.27.0