From a9b3cd7f323b2e57593e7215362a7b02fc933e3a Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Mon, 1 Aug 2011 16:19:00 +0000 Subject: 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) // Signed-off-by: Stephen Hemminger Acked-by: Paul E. McKenney Signed-off-by: David S. Miller --- net/802/garp.c | 4 ++-- net/802/stp.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'net/802') diff --git a/net/802/garp.c b/net/802/garp.c index 16102951d36..070bf4403bf 100644 --- a/net/802/garp.c +++ b/net/802/garp.c @@ -553,7 +553,7 @@ static void garp_release_port(struct net_device *dev) 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 @@ void garp_uninit_applicant(struct net_device *dev, struct garp_application *appl 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. */ diff --git a/net/802/stp.c b/net/802/stp.c index 978c30b1b36..0e136ef1e4b 100644 --- a/net/802/stp.c +++ b/net/802/stp.c @@ -88,9 +88,9 @@ void stp_proto_unregister(const struct stp_proto *proto) { mutex_lock(&stp_proto_mutex); if (is_zero_ether_addr(proto->group_address)) - rcu_assign_pointer(stp_proto, NULL); + RCU_INIT_POINTER(stp_proto, NULL); else - rcu_assign_pointer(garp_protos[proto->group_address[5] - + RCU_INIT_POINTER(garp_protos[proto->group_address[5] - GARP_ADDR_MIN], NULL); synchronize_rcu(); -- cgit v1.2.3