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| author | David S. Miller <davem@davemloft.net> | 2008-05-25 23:26:10 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-05-25 23:26:10 -0700 |
| commit | 43154d08d6bb5c69aa0d0e3448fb348b4cd84e91 (patch) | |
| tree | 176edb26aad2d33e8be36530b66b19d0603c4b1d /drivers/net/wan/hdlc.c | |
| parent | 03194379a77b02df3404ec4848a50c6784e9a8a5 (diff) | |
| parent | 289c79a4bd350e8a25065102563ad1a183d1b402 (diff) | |
| download | blackbird-op-linux-43154d08d6bb5c69aa0d0e3448fb348b4cd84e91.tar.gz blackbird-op-linux-43154d08d6bb5c69aa0d0e3448fb348b4cd84e91.zip | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/cpmac.c
net/mac80211/mlme.c
Diffstat (limited to 'drivers/net/wan/hdlc.c')
| -rw-r--r-- | drivers/net/wan/hdlc.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/net/wan/hdlc.c b/drivers/net/wan/hdlc.c index 9a83c9d5b8cf..7f984895b0d5 100644 --- a/drivers/net/wan/hdlc.c +++ b/drivers/net/wan/hdlc.c @@ -43,8 +43,7 @@ static const char* version = "HDLC support module revision 1.22"; #undef DEBUG_LINK -static struct hdlc_proto *first_proto = NULL; - +static struct hdlc_proto *first_proto; static int hdlc_change_mtu(struct net_device *dev, int new_mtu) { @@ -314,21 +313,25 @@ void detach_hdlc_protocol(struct net_device *dev) void register_hdlc_protocol(struct hdlc_proto *proto) { + rtnl_lock(); proto->next = first_proto; first_proto = proto; + rtnl_unlock(); } void unregister_hdlc_protocol(struct hdlc_proto *proto) { - struct hdlc_proto **p = &first_proto; - while (*p) { - if (*p == proto) { - *p = proto->next; - return; - } + struct hdlc_proto **p; + + rtnl_lock(); + p = &first_proto; + while (*p != proto) { + BUG_ON(!*p); p = &((*p)->next); } + *p = proto->next; + rtnl_unlock(); } |
