[HDLC] Fix dev->header_cache_update having a random value.

Switching HDLC devices from Ethernet-framing mode caused stale ethernet
function assignments within net_device.

Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/net/wan/hdlc_ppp.c b/drivers/net/wan/hdlc_ppp.c
index e9f717070fde..4591437dd2f3 100644
--- a/drivers/net/wan/hdlc_ppp.c
+++ b/drivers/net/wan/hdlc_ppp.c
@@ -127,9 +127,7 @@ static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr)
                 if (result)
                         return result;
                 dev->hard_start_xmit = hdlc->xmit;
-                dev->hard_header = NULL;
                 dev->type = ARPHRD_PPP;
-                dev->addr_len = 0;
                 netif_dormant_off(dev);
                 return 0;
         }