netdev - [PATCH 2/2] can: kvaser_pciefd: Fix error handling in kvaser_pciefd

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Date:   Sat, 28 Nov 2020 21:39:22 +0800
From:   Zhang Qilong <zhangqilong3@...wei.com>
To:     <wg@...ndegger.com>, <mkl@...gutronix.de>, <davem@...emloft.net>,
        <kuba@...nel.org>
CC:     <netdev@...r.kernel.org>, <linux-can@...r.kernel.org>
Subject: [PATCH 2/2] can: kvaser_pciefd: Fix error handling in kvaser_pciefd_open

If kvaser_pciefd_bus_on failed, we should call close_candev
to avoid reference leak.

Fixes: 26ad340e582d3 ("can: kvaser_pciefd: Add driver for Kvaser PCIEcan devices")
Signed-off-by: Zhang Qilong <zhangqilong3@...wei.com>
---
 drivers/net/can/kvaser_pciefd.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/kvaser_pciefd.c b/drivers/net/can/kvaser_pciefd.c
index 1bafa614950e..969cedb9b0b6 100644
--- a/drivers/net/can/kvaser_pciefd.c
+++ b/drivers/net/can/kvaser_pciefd.c
@@ -692,8 +692,10 @@ static int kvaser_pciefd_open(struct net_device *netdev)
 		return err;
 
 	err = kvaser_pciefd_bus_on(can);
-	if (err)
+	if (err) {
+		close_candev(netdev);
 		return err;
+	}
 
 	return 0;
 }
-- 
2.25.4