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authorDavid S. Miller <davem@davemloft.net>2008-12-23 17:56:23 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-23 17:56:23 -0800
commit6332178d91ca1a9dbd99bd97cabbcf965d178e9f (patch)
treed98af2cbc7ff0e9e4d00b6cc8c79b05ca7815a5f /drivers/net/ppp_generic.c
parent908a7a16b852ffd618a9127be8d62432182d81b4 (diff)
parent739840d529eb7505d3cbfe9d468bf1440c9a8e27 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/ppp_generic.c
Diffstat (limited to 'drivers/net/ppp_generic.c')
-rw-r--r--drivers/net/ppp_generic.c28
1 files changed, 13 insertions, 15 deletions
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index c832d600d1e8..06b448285eb5 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -117,6 +117,7 @@ struct ppp {
unsigned long last_xmit; /* jiffies when last pkt sent 9c */
unsigned long last_recv; /* jiffies when last pkt rcvd a0 */
struct net_device *dev; /* network interface device a4 */
+ int closing; /* is device closing down? a8 */
#ifdef CONFIG_PPP_MULTILINK
int nxchan; /* next channel to send something on */
u32 nxseq; /* next sequence number to send */
@@ -983,7 +984,7 @@ ppp_xmit_process(struct ppp *ppp)
struct sk_buff *skb;
ppp_xmit_lock(ppp);
- if (ppp->dev) {
+ if (!ppp->closing) {
ppp_push(ppp);
while (!ppp->xmit_pending
&& (skb = skb_dequeue(&ppp->file.xq)))
@@ -1451,8 +1452,7 @@ static inline void
ppp_do_recv(struct ppp *ppp, struct sk_buff *skb, struct channel *pch)
{
ppp_recv_lock(ppp);
- /* ppp->dev == 0 means interface is closing down */
- if (ppp->dev)
+ if (!ppp->closing)
ppp_receive_frame(ppp, skb, pch);
else
kfree_skb(skb);
@@ -2484,18 +2484,16 @@ init_ppp_file(struct ppp_file *pf, int kind)
*/
static void ppp_shutdown_interface(struct ppp *ppp)
{
- struct net_device *dev;
-
mutex_lock(&all_ppp_mutex);
- ppp_lock(ppp);
- dev = ppp->dev;
- ppp->dev = NULL;
- ppp_unlock(ppp);
/* This will call dev_close() for us. */
- if (dev) {
- unregister_netdev(dev);
- free_netdev(dev);
- }
+ ppp_lock(ppp);
+ if (!ppp->closing) {
+ ppp->closing = 1;
+ ppp_unlock(ppp);
+ unregister_netdev(ppp->dev);
+ } else
+ ppp_unlock(ppp);
+
unit_put(&ppp_units_idr, ppp->file.index);
ppp->file.dead = 1;
ppp->owner = NULL;
@@ -2540,7 +2538,7 @@ static void ppp_destroy_interface(struct ppp *ppp)
if (ppp->xmit_pending)
kfree_skb(ppp->xmit_pending);
- kfree(ppp);
+ free_netdev(ppp->dev);
}
/*
@@ -2602,7 +2600,7 @@ ppp_connect_channel(struct channel *pch, int unit)
if (pch->file.hdrlen > ppp->file.hdrlen)
ppp->file.hdrlen = pch->file.hdrlen;
hdrlen = pch->file.hdrlen + 2; /* for protocol bytes */
- if (ppp->dev && hdrlen > ppp->dev->hard_header_len)
+ if (hdrlen > ppp->dev->hard_header_len)
ppp->dev->hard_header_len = hdrlen;
list_add_tail(&pch->clist, &ppp->channels);
++ppp->n_channels;