linux-kernel - [PATCH] net: fman: Use common error handling code in dtsec

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Date: Tue, 27 Feb 2024 14:14:52 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: netdev@...r.kernel.org, kernel-janitors@...r.kernel.org,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Madalin Bucur <madalin.bucur@....com>,
 Paolo Abeni <pabeni@...hat.com>, Sean Anderson <sean.anderson@...o.com>
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] net: fman: Use common error handling code in dtsec_init()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 27 Feb 2024 14:05:25 +0100

Adjust jump targets so that a bit of exception handling can be better
reused at the end of this function implementation.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 .../net/ethernet/freescale/fman/fman_dtsec.c  | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fman/fman_dtsec.c b/drivers/net/ethernet/freescale/fman/fman_dtsec.c
index 3088da7adf0f..1de22400fd89 100644
--- a/drivers/net/ethernet/freescale/fman/fman_dtsec.c
+++ b/drivers/net/ethernet/freescale/fman/fman_dtsec.c
@@ -1279,9 +1279,8 @@ static int dtsec_init(struct fman_mac *dtsec)
 		   dtsec->max_speed, dtsec->addr, dtsec->exceptions,
 		   dtsec->tbidev->addr);
 	if (err) {
-		free_init_resources(dtsec);
 		pr_err("DTSEC version doesn't support this i/f mode\n");
-		return err;
+		goto free_resources;
 	}

 	/* Configure the TBI PHY Control Register */
@@ -1296,23 +1295,21 @@ static int dtsec_init(struct fman_mac *dtsec)
 	err = fman_set_mac_max_frame(dtsec->fm, dtsec->mac_id, max_frm_ln);
 	if (err) {
 		pr_err("Setting max frame length failed\n");
-		free_init_resources(dtsec);
-		return -EINVAL;
+		err = -EINVAL;
+		goto free_resources;
 	}

 	dtsec->multicast_addr_hash =
 	alloc_hash_table(EXTENDED_HASH_TABLE_SIZE);
 	if (!dtsec->multicast_addr_hash) {
-		free_init_resources(dtsec);
 		pr_err("MC hash table is failed\n");
-		return -ENOMEM;
+		goto e_nomem;
 	}

 	dtsec->unicast_addr_hash = alloc_hash_table(DTSEC_HASH_TABLE_SIZE);
 	if (!dtsec->unicast_addr_hash) {
-		free_init_resources(dtsec);
 		pr_err("UC hash table is failed\n");
-		return -ENOMEM;
+		goto e_nomem;
 	}

 	/* register err intr handler for dtsec to FPM (err) */
@@ -1326,6 +1323,12 @@ static int dtsec_init(struct fman_mac *dtsec)
 	dtsec->dtsec_drv_param = NULL;

 	return 0;
+
+e_nomem:
+	err = -ENOMEM;
+free_resources:
+	free_init_resources(dtsec);
+	return err;
 }

 static int dtsec_free(struct fman_mac *dtsec)
--
2.43.2