From: Monam Agarwal Date: Sun, 23 Mar 2014 19:12:46 +0000 (+0530) Subject: net/core: Use RCU_INIT_POINTER(x, NULL) in netpoll.c X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=fcb144b5df260d5005165589f958594facf1d6ae;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git net/core: Use RCU_INIT_POINTER(x, NULL) in netpoll.c 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 Signed-off-by: David S. Miller --- diff --git a/net/core/netpoll.c b/net/core/netpoll.c index 7291dde93469..41c4e9ce1141 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -809,7 +809,7 @@ void __netpoll_cleanup(struct netpoll *np) if (ops->ndo_netpoll_cleanup) ops->ndo_netpoll_cleanup(np->dev); - rcu_assign_pointer(np->dev->npinfo, NULL); + RCU_INIT_POINTER(np->dev->npinfo, NULL); call_rcu_bh(&npinfo->rcu, rcu_cleanup_netpoll_info); } }