netdev - [net-next 1/4] can: etas_es58x: Fix missing null check on netdev pointer

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Message-Id: <20210426065452.3411360-2-mkl@pengutronix.de>
Date:   Mon, 26 Apr 2021 08:54:49 +0200
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, linux-can@...r.kernel.org,
        kernel@...gutronix.de, Colin Ian King <colin.king@...onical.com>,
        Vincent Mailhol <mailhol.vincent@...adoo.fr>,
        Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [net-next 1/4] can: etas_es58x: Fix missing null check on netdev pointer

From: Colin Ian King <colin.king@...onical.com>

There is an assignment to *netdev that is that can potentially be null
but the null check is checking netdev and not *netdev as intended. Fix
this by adding in the missing * operator.

Fixes: 8537257874e9 ("can: etas_es58x: add core support for ETAS ES58X CAN USB interfaces")
Link: https://lore.kernel.org/r/20210415084723.1807935-1-colin.king@canonical.com
Addresses-Coverity: ("Dereference before null check")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
Acked-by: Vincent Mailhol <mailhol.vincent@...adoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 drivers/net/can/usb/etas_es58x/es58x_core.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/can/usb/etas_es58x/es58x_core.h b/drivers/net/can/usb/etas_es58x/es58x_core.h
index 5f4e7dc5be35..fcf219e727bf 100644
--- a/drivers/net/can/usb/etas_es58x/es58x_core.h
+++ b/drivers/net/can/usb/etas_es58x/es58x_core.h
@@ -625,7 +625,7 @@ static inline int es58x_get_netdev(struct es58x_device *es58x_dev,
 		return -ECHRNG;
 
 	*netdev = es58x_dev->netdev[channel_idx];
-	if (!netdev || !netif_device_present(*netdev))
+	if (!*netdev || !netif_device_present(*netdev))
 		return -ENODEV;
 
 	return 0;

base-commit: b2f0ca00e6b34bd57c9298a869ea133699e8ec39
-- 
2.30.2