linux-kernel - [PATCH net-next 2/2] net: dsa: mv88e6xxx: Use kcalloc()

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Message-ID: <2f4fca4ff84950da71e007c9169f18a0272476f3.1751200453.git.christophe.jaillet@wanadoo.fr>
Date: Sun, 29 Jun 2025 14:35:50 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Andrew Lunn <andrew@...n.ch>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>
Cc: linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	netdev@...r.kernel.org
Subject: [PATCH net-next 2/2] net: dsa: mv88e6xxx: Use kcalloc()

Use kcalloc() instead of hand writing it. This is less verbose.

Also move the initialization of 'count' to save some LoC.

On a x86_64, with allmodconfig, as an example:
Before:
======
   text	   data	    bss	    dec	    hex	filename
  18652	   5920	     64	  24636	   603c	drivers/net/dsa/mv88e6xxx/devlink.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
  18498	   5920	     64	  24482	   5fa2	drivers/net/dsa/mv88e6xxx/devlink.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
Compile tested only
---
 drivers/net/dsa/mv88e6xxx/devlink.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/devlink.c b/drivers/net/dsa/mv88e6xxx/devlink.c
index aec652e33fc1..da69e0b85879 100644
--- a/drivers/net/dsa/mv88e6xxx/devlink.c
+++ b/drivers/net/dsa/mv88e6xxx/devlink.c
@@ -376,19 +376,14 @@ static int mv88e6xxx_region_atu_snapshot(struct devlink *dl,
 	struct dsa_switch *ds = dsa_devlink_to_ds(dl);
 	struct mv88e6xxx_devlink_atu_entry *table;
 	struct mv88e6xxx_chip *chip = ds->priv;
-	int fid = -1, err = 0, count;
+	int fid = -1, err = 0, count = 0;
 
-	table = kmalloc_array(mv88e6xxx_num_databases(chip),
-			      sizeof(struct mv88e6xxx_devlink_atu_entry),
-			      GFP_KERNEL);
+	table = kcalloc(mv88e6xxx_num_databases(chip),
+			sizeof(struct mv88e6xxx_devlink_atu_entry),
+			GFP_KERNEL);
 	if (!table)
 		return -ENOMEM;
 
-	memset(table, 0, mv88e6xxx_num_databases(chip) *
-	       sizeof(struct mv88e6xxx_devlink_atu_entry));
-
-	count = 0;
-
 	mv88e6xxx_reg_lock(chip);
 
 	while (1) {
-- 
2.50.0