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| author | Alexander Stein <alexander.stein@systec-electronic.com> | 2012-11-27 08:52:34 +0100 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2012-11-29 14:30:08 +0100 |
| commit | ab48b03ec9ae1840a1e427e2375bd0d9d554b4ed (patch) | |
| tree | ee5ccc5e13c9faf3a8b45a4ed084b22774328f9f | |
| parent | 3177bf6f922f62743133abbcbbbb5545f4133b2d (diff) | |
| download | lwn-ab48b03ec9ae1840a1e427e2375bd0d9d554b4ed.tar.gz lwn-ab48b03ec9ae1840a1e427e2375bd0d9d554b4ed.zip | |
can: Do not call dev_put if restart timer is running upon close
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
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
| -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 963e2ccd10db..8233e5ed2939 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -609,8 +609,7 @@ 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); |