[linux-yocto] [PATCH 12/29] net/openvswitch: Use with RCU_INIT_POINTER(x, NULL) in vport-gre.c

[zhe.he at windriver.com]

From: Monam Agarwal <monamagarwal123 at gmail.com>

commit 944df8ae84d88f5e8eb027990dad2cfa4fbe4be5 upstream

This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL)

The rcu_assign_pointer() ensures that the initialization of a structure
is carried out before storing a pointer to that structure.
And in the case of the NULL pointer, there is no structure to initialize.
So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL)

Signed-off-by: Monam Agarwal <monamagarwal123 at gmail.com>
Signed-off-by: Jesse Gross <jesse at nicira.com>
Signed-off-by: He Zhe <zhe.he at windriver.com>
---
 net/openvswitch/vport-gre.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/openvswitch/vport-gre.c b/net/openvswitch/vport-gre.c
index a3d6951..a0da2dd 100644
--- a/net/openvswitch/vport-gre.c
+++ b/net/openvswitch/vport-gre.c
@@ -256,7 +256,7 @@ static void gre_tnl_destroy(struct vport *vport)
 
 	ovs_net = net_generic(net, ovs_net_id);
 
-	rcu_assign_pointer(ovs_net->vport_net.gre_vport, NULL);
+	RCU_INIT_POINTER(ovs_net->vport_net.gre_vport, NULL);
 	ovs_vport_deferred_free(vport);
 	gre_exit();
 }
-- 
1.9.1