From 3b7d2b319db0ba1f6208ca58b297fb419301f85a Mon Sep 17 00:00:00 2001 From: Jan Dumon Date: Wed, 1 Apr 2009 22:57:20 +0000 Subject: [PATCH] hso: fix for crash when unplugging the device Changed the order in which things are freed. This fixes an oops when unplugging the device while network traffic is ongoing. Signed-off-by: Jan Dumon Signed-off-by: David S. Miller --- drivers/net/usb/hso.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c index 28d1424a311..779a0078fcd 100644 --- a/drivers/net/usb/hso.c +++ b/drivers/net/usb/hso.c @@ -5,6 +5,7 @@ * Copyright (C) 2008 Option International * Filip Aben * Denis Joseph Barrow + * Jan Dumon * Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd) * * Copyright (C) 2008 Greg Kroah-Hartman @@ -2417,20 +2418,22 @@ static void hso_free_net_device(struct hso_device *hso_dev) if (!hso_net) return; + remove_net_device(hso_net->parent); + + if (hso_net->net) { + unregister_netdev(hso_net->net); + free_netdev(hso_net->net); + } + /* start freeing */ for (i = 0; i < MUX_BULK_RX_BUF_COUNT; i++) { usb_free_urb(hso_net->mux_bulk_rx_urb_pool[i]); kfree(hso_net->mux_bulk_rx_buf_pool[i]); + hso_net->mux_bulk_rx_buf_pool[i] = NULL; } usb_free_urb(hso_net->mux_bulk_tx_urb); kfree(hso_net->mux_bulk_tx_buf); - - remove_net_device(hso_net->parent); - - if (hso_net->net) { - unregister_netdev(hso_net->net); - free_netdev(hso_net->net); - } + hso_net->mux_bulk_tx_buf = NULL; kfree(hso_dev); } @@ -2620,12 +2623,12 @@ static void hso_free_tiomget(struct hso_serial *serial) { struct hso_tiocmget *tiocmget = serial->tiocmget; if (tiocmget) { - kfree(tiocmget); if (tiocmget->urb) { usb_free_urb(tiocmget->urb); tiocmget->urb = NULL; } serial->tiocmget = NULL; + kfree(tiocmget); } } -- 2.41.1