rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER
When assigning a NULL value to an RCU protected pointer, no barrier
is needed. The rcu_assign_pointer, used to handle that but will soon
change to not handle the special case.
Convert all rcu_assign_pointer of NULL value.
//smpl
@@ expression P; @@
- rcu_assign_pointer(P, NULL)
+ RCU_INIT_POINTER(P, NULL)
// </smpl>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/802/garp.c b/net/802/garp.c
index 1610295..070bf44 100644
--- a/net/802/garp.c
+++ b/net/802/garp.c
@@ -553,7 +553,7 @@
if (rtnl_dereference(port->applicants[i]))
return;
}
- rcu_assign_pointer(dev->garp_port, NULL);
+ RCU_INIT_POINTER(dev->garp_port, NULL);
kfree_rcu(port, rcu);
}
@@ -605,7 +605,7 @@
ASSERT_RTNL();
- rcu_assign_pointer(port->applicants[appl->type], NULL);
+ RCU_INIT_POINTER(port->applicants[appl->type], NULL);
/* Delete timer and generate a final TRANSMIT_PDU event to flush out
* all pending messages before the applicant is gone. */