Commit 6ca4f65e authored by Jeff Moyer's avatar Jeff Moyer Committed by David S. Miller
Browse files

[NETPOLL]: Set poll_owner to -1 before unlocking in netpoll_poll_unlock() 



This trivial patch moves the assignment of poll_owner to -1 inside of
the lock.  This fixes a potential SMP race in the code.

Signed-off-by: default avatarJeff Moyer <jmoyer@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f31f5f05

include/linux/netpoll.h

+1 −1
Original line number Diff line number Diff line
@@ -53,8 +53,8 @@ static inline void netpoll_poll_lock(struct net_device *dev) 
static inline void netpoll_poll_unlock(struct net_device *dev)

{

	if (dev->np) {

		spin_unlock(&dev->np->poll_lock);

		dev->np->poll_owner = -1;

		spin_unlock(&dev->np->poll_lock);

	}

}