linux-kernel - [PATCH] net: dsa: loop: Free resources if initialization is deferred

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Message-Id: <20170510041503.29363-1-christophe.jaillet@wanadoo.fr>
Date:   Wed, 10 May 2017 06:15:03 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     andrew@...n.ch, vivien.didelot@...oirfairelinux.com,
        f.fainelli@...il.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] net: dsa: loop: Free resources if initialization is deferred

Free some devm'allocated memory in case of deferred driver initialization.
This avoid to waste some memory in such a case.

Suggested-by: Joe Perches <joe@...ches.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/net/dsa/dsa_loop.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/dsa_loop.c b/drivers/net/dsa/dsa_loop.c
index a19e1781e9bb..557afb418320 100644
--- a/drivers/net/dsa/dsa_loop.c
+++ b/drivers/net/dsa/dsa_loop.c
@@ -260,8 +260,11 @@ static int dsa_loop_drv_probe(struct mdio_device *mdiodev)
 		return -ENOMEM;
 
 	ps->netdev = dev_get_by_name(&init_net, pdata->netdev);
-	if (!ps->netdev)
+	if (!ps->netdev) {
+		devm_kfree(&mdiodev->dev, ps);
+		devm_kfree(&mdiodev->dev, ds);
 		return -EPROBE_DEFER;
+	}
 
 	pdata->cd.netdev[DSA_LOOP_CPU_PORT] = &ps->netdev->dev;
 
-- 
2.11.0