diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-07-08 10:32:56 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 10:32:56 +0200 |
| commit | 896395c290f902576270d84291c1f7f8bfbe339d (patch) | |
| tree | 650114bff3a5f808ee1d713ecc443b0eaab2e1c3 /drivers/net/wan/hdlc.c | |
| parent | af1cf204ba2fd8135933a2e4df523fb1112dc0e2 (diff) | |
| parent | 1b40a895df6c7d5a80e71f65674060b03d84bbef (diff) | |
| download | blackbird-op-linux-896395c290f902576270d84291c1f7f8bfbe339d.tar.gz blackbird-op-linux-896395c290f902576270d84291c1f7f8bfbe339d.zip | |
Merge branch 'linus' into tmp.x86.mpparse.new
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(); } |
