netdev - [PATCH] ieee802154: ca8210: Add missing check for kfifo_alloc() in ca8210

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Message-Id: <20241029182712.318271-1-keisuke.nishimura@inria.fr>
Date: Tue, 29 Oct 2024 19:27:12 +0100
From: Keisuke Nishimura <keisuke.nishimura@...ia.fr>
To: Alexander Aring <alex.aring@...il.com>,
	Stefan Schmidt <stefan@...enfreihafen.org>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>
Cc: linux-wpan@...r.kernel.org,
	netdev@...r.kernel.org,
	Keisuke Nishimura <keisuke.nishimura@...ia.fr>
Subject: [PATCH] ieee802154: ca8210: Add missing check for kfifo_alloc() in ca8210_probe()

ca8210_test_interface_init() returns the result of kfifo_alloc(),
which can be non-zero in case of an error. The caller, ca8210_probe(),
should check the return value and do error-handling if it fails.

Fixes: ded845a781a5 ("ieee802154: Add CA8210 IEEE 802.15.4 device driver")
Signed-off-by: Keisuke Nishimura <keisuke.nishimura@...ia.fr>
---
 drivers/net/ieee802154/ca8210.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ieee802154/ca8210.c b/drivers/net/ieee802154/ca8210.c
index e685a7f946f0..753215ebc67c 100644
--- a/drivers/net/ieee802154/ca8210.c
+++ b/drivers/net/ieee802154/ca8210.c
@@ -3072,7 +3072,11 @@ static int ca8210_probe(struct spi_device *spi_device)
 	spi_set_drvdata(priv->spi, priv);
 	if (IS_ENABLED(CONFIG_IEEE802154_CA8210_DEBUGFS)) {
 		cascoda_api_upstream = ca8210_test_int_driver_write;
-		ca8210_test_interface_init(priv);
+		ret = ca8210_test_interface_init(priv);
+		if (ret) {
+			dev_crit(&spi_device->dev, "ca8210_test_interface_init failed\n");
+			goto error;
+		}
 	} else {
 		cascoda_api_upstream = NULL;
 	}
-- 
2.34.1