netdev - [PATCH net-next] net/mlx5: Use kasprintf()

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Date: Sat, 10 Feb 2024 11:53:13 +0100
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: 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>,
	Paolo Abeni <pabeni@...hat.com>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Eli Cohen <eli@...lanox.com>
Cc: linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	netdev@...r.kernel.org,
	linux-rdma@...r.kernel.org
Subject: [PATCH net-next] net/mlx5: Use kasprintf()

Use kasprintf() instead of open-coding it.
This saves some lines of code, avoid a hard-coded magic number and is more
robust.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
If you consider it as a bug fix, should 'name' overflow because of the
hard-coded limit, then:
Fixes: ac6ea6e81a80 ("net/mlx5_core: Use private health thread for each device")
---
 drivers/net/ethernet/mellanox/mlx5/core/health.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/health.c b/drivers/net/ethernet/mellanox/mlx5/core/health.c
index 8ff6dc9bc803..3f775da15afc 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/health.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/health.c
@@ -856,12 +856,11 @@ int mlx5_health_init(struct mlx5_core_dev *dev)
 	mlx5_reporter_vnic_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)
-- 
2.43.0