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[TIPC]: Use tipc_port_unlock

Browse source 
The file net/tipc/port.c takes a lock using the function tipc_port_lock and
then releases the lock sometimes using tipc_port_unlock and sometimes using
spin_unlock_bh(p_ptr->publ.lock).  tipc_port_unlock simply does the
spin_unlock_bh, but it seems cleaner to use it everywhere.

The problem was fixed using the following semantic patch.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
struct port *p_ptr;
@@

   p_ptr = tipc_port_lock(...)
   ...
(
   p_ptr = tipc_port_lock(...);
|
?- spin_unlock_bh(p_ptr->publ.lock);
+  tipc_port_unlock(p_ptr);
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Jon Paul Maloy <maloy@donjonn.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julia Lawall 2008-01-08 23:48:20 -08:00 committed by David S. Miller
parent cdcb006fbe
commit 4cec72c890
1 changed files with 10 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
net/tipc/port.c
View file

@ -340,7 +340,7 @@ int tipc_portunreliable(u32 ref, unsigned int *isunreliable)
if (!p_ptr)
return -EINVAL;
*isunreliable = port_unreliable(p_ptr);
spin_unlock_bh(p_ptr->publ.lock);
tipc_port_unlock(p_ptr);
return TIPC_OK;
}
@ -369,7 +369,7 @@ int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable)
if (!p_ptr)
return -EINVAL;
*isunrejectable = port_unreturnable(p_ptr);
spin_unlock_bh(p_ptr->publ.lock);
tipc_port_unlock(p_ptr);
return TIPC_OK;
}
@ -843,7 +843,7 @@ static void port_dispatcher_sigh(void *dummy)
u32 peer_port = port_peerport(p_ptr);
u32 peer_node = port_peernode(p_ptr);
spin_unlock_bh(p_ptr->publ.lock);
tipc_port_unlock(p_ptr);
if (unlikely(!connected)) {
if (unlikely(published))
goto reject;
@ -867,7 +867,7 @@ static void port_dispatcher_sigh(void *dummy)
case TIPC_DIRECT_MSG:{
tipc_msg_event cb = up_ptr->msg_cb;
spin_unlock_bh(p_ptr->publ.lock);
tipc_port_unlock(p_ptr);
if (unlikely(connected))
goto reject;
if (unlikely(!cb))
@ -882,7 +882,7 @@ static void port_dispatcher_sigh(void *dummy)
case TIPC_NAMED_MSG:{
tipc_named_msg_event cb = up_ptr->named_msg_cb;
spin_unlock_bh(p_ptr->publ.lock);
tipc_port_unlock(p_ptr);
if (unlikely(connected))
goto reject;
if (unlikely(!cb))
@ -913,7 +913,7 @@ err:
u32 peer_port = port_peerport(p_ptr);
u32 peer_node = port_peernode(p_ptr);
spin_unlock_bh(p_ptr->publ.lock);
tipc_port_unlock(p_ptr);
if (!connected || !cb)
break;
if (msg_origport(msg) != peer_port)
@ -929,7 +929,7 @@ err:
case TIPC_DIRECT_MSG:{
tipc_msg_err_event cb = up_ptr->err_cb;
spin_unlock_bh(p_ptr->publ.lock);
tipc_port_unlock(p_ptr);
if (connected || !cb)
break;
skb_pull(buf, msg_hdr_sz(msg));
@ -942,7 +942,7 @@ err:
tipc_named_msg_err_event cb =
up_ptr->named_err_cb;
spin_unlock_bh(p_ptr->publ.lock);
tipc_port_unlock(p_ptr);
if (connected || !cb)
break;
dseq.type = msg_nametype(msg);
@ -1107,7 +1107,7 @@ int tipc_portimportance(u32 ref, unsigned int *importance)
if (!p_ptr)
return -EINVAL;
*importance = (unsigned int)msg_importance(&p_ptr->publ.phdr);
spin_unlock_bh(p_ptr->publ.lock);
tipc_port_unlock(p_ptr);
return TIPC_OK;
}
@ -1122,7 +1122,7 @@ int tipc_set_portimportance(u32 ref, unsigned int imp)
if (!p_ptr)
return -EINVAL;
msg_set_importance(&p_ptr->publ.phdr, (u32)imp);
spin_unlock_bh(p_ptr->publ.lock);
tipc_port_unlock(p_ptr);
return TIPC_OK;
}