From: Zhang Qilong <zhangqilong3@xxxxxxxxxx>
[ Upstream commit 4d1be581ec6b92a338bb7ed23e1381f45ddf336f ]
If softing_netdev_open() fails, we should call close_candev() to avoid
reference leak.
Fixes: 03fd3cf5a179d ("can: add driver for Softing card")
Signed-off-by: Zhang Qilong <zhangqilong3@xxxxxxxxxx>
Acked-by: Kurt Van Dijck <dev.kurt@xxxxxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20201202151632.1343786-1-zhangqilong3@xxxxxxxxxx
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20201204133508.742120-2-mkl@xxxxxxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/can/softing/softing_main.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/net/can/softing/softing_main.c b/drivers/net/can/softing/softing_main.c
index e226961905830..bed5ffa75b276 100644
--- a/drivers/net/can/softing/softing_main.c
+++ b/drivers/net/can/softing/softing_main.c
@@ -393,8 +393,13 @@ static int softing_netdev_open(struct net_device *ndev)
/* check or determine and set bittime */
ret = open_candev(ndev);
- if (!ret)
- ret = softing_startstop(ndev, 1);
+ if (ret)
+ return ret;
+
+ ret = softing_startstop(ndev, 1);
+ if (ret < 0)
+ close_candev(ndev);
+
return ret;
}
--
2.27.0
