diff options
| author | Alexander Stein <alexander.stein@systec-electronic.com> | 2012-11-27 08:52:34 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-11 09:07:18 -0800 |
| commit | 4ca05c86fde5ea8fd6b1929cb0e14b7993de9ba1 (patch) | |
| tree | aef77458a5bcf79ba78f34b0752ff0dc9f5cef54 | |
| parent | c0c7cf289528474c46ce4e851ed33c467c32720c (diff) | |
can: Do not call dev_put if restart timer is running upon close
commit ab48b03ec9ae1840a1e427e2375bd0d9d554b4ed upstream.
If the restart timer is running due to BUS-OFF and the device is
disconnected an dev_put will decrease the usage counter to -1 thus
blocking the interface removal, resulting in the following dmesg
lines repeating every 10s:
can: notifier: receive list not found for dev can0
can: notifier: receive list not found for dev can0
can: notifier: receive list not found for dev can0
unregister_netdevice: waiting for can0 to become free. Usage count = -1
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/can/dev.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c index c5fe3a3db8c9..e86f4c37f981 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -576,8 +576,7 @@ void close_candev(struct net_device *dev) { struct can_priv *priv = netdev_priv(dev); - if (del_timer_sync(&priv->restart_timer)) - dev_put(dev); + del_timer_sync(&priv->restart_timer); can_flush_echo_skb(dev); } EXPORT_SYMBOL_GPL(close_candev); |