ppp: remove PPPOX_ZOMBIE socket state

PPPOX_ZOMBIE is never set anymore.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ppp/pppoe.c

@@ -311,7 +311,7 @@ static void pppoe_flush_dev(struct net_device *dev)
 			lock_sock(sk);
 
 			if (po->pppoe_dev == dev &&
-			    sk->sk_state & (PPPOX_CONNECTED | PPPOX_BOUND | PPPOX_ZOMBIE)) {
+			    sk->sk_state & (PPPOX_CONNECTED | PPPOX_BOUND)) {
 				pppox_unbind_sock(sk);
 				sk->sk_state_change(sk);
 				po->pppoe_dev = NULL;
@@ -775,7 +775,7 @@ static int pppoe_ioctl(struct socket *sock, unsigned int cmd,
 		struct pppox_sock *relay_po;
 
 		err = -EBUSY;
-		if (sk->sk_state & (PPPOX_BOUND | PPPOX_ZOMBIE | PPPOX_DEAD))
+		if (sk->sk_state & (PPPOX_BOUND | PPPOX_DEAD))
 			break;
 
 		err = -ENOTCONN;

drivers/net/ppp/pppox.c

@@ -58,7 +58,7 @@ void pppox_unbind_sock(struct sock *sk)
 {
 	/* Clear connection to ppp device, if attached. */
 
-	if (sk->sk_state & (PPPOX_BOUND | PPPOX_CONNECTED | PPPOX_ZOMBIE)) {
+	if (sk->sk_state & (PPPOX_BOUND | PPPOX_CONNECTED)) {
 		ppp_unregister_channel(&pppox_sk(sk)->chan);
 		sk->sk_state = PPPOX_DEAD;
 	}

include/linux/if_pppox.h

@@ -91,7 +91,6 @@ enum {
     PPPOX_CONNECTED	= 1,  /* connection established ==TCP_ESTABLISHED */
     PPPOX_BOUND		= 2,  /* bound to ppp device */
     PPPOX_RELAY		= 4,  /* forwarding is enabled */
-    PPPOX_ZOMBIE	= 8,  /* dead, but still bound to ppp device */
     PPPOX_DEAD		= 16  /* dead, useless, please clean me up!*/
 };