3.16.85-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socketcan@xxxxxxxxxxxx>
commit 2091a3d42b4f339eaeed11228e0cbe9d4f92f558 upstream.
As the description before netdev_run_todo, we cannot call free_netdev
before rtnl_unlock, fix it by reorder the code.
This patch is a 1:1 copy of upstream slip.c commit f596c87005f7
("slip: not call free_netdev before rtnl_unlock in slip_open").
Reported-by: yangerkun <yangerkun@xxxxxxxxxx>
Signed-off-by: Oliver Hartkopp <socketcan@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
drivers/net/can/slcan.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/can/slcan.c
+++ b/drivers/net/can/slcan.c
@@ -620,7 +620,10 @@ err_free_chan:
sl->tty = NULL;
tty->disc_data = NULL;
clear_bit(SLF_INUSE, &sl->flags);
+ /* do not call free_netdev before rtnl_unlock */
+ rtnl_unlock();
slc_free_netdev(sl->dev);
+ return err;
err_exit:
rtnl_unlock();
