[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, 3 deletions

diff --git a/drivers/net/wan/hdlc_cisco.c b/drivers/net/wan/hdlc_cisco.c
index b0bc5ddcf1b1..c9664fd8a917 100644
--- a/drivers/net/wan/hdlc_cisco.c
+++ b/drivers/net/wan/hdlc_cisco.c
@@ -365,10 +365,7 @@ static int cisco_ioctl(struct net_device *dev, struct ifreq *ifr)
                 memcpy(&state(hdlc)->settings, &new_settings, size);
                 dev->hard_start_xmit = hdlc->xmit;
                 dev->hard_header = cisco_hard_header;
-                dev->hard_header_cache = NULL;
                 dev->type = ARPHRD_CISCO;
-                dev->flags = IFF_POINTOPOINT | IFF_NOARP;
-                dev->addr_len = 0;
                 netif_dormant_on(dev);
                 return 0;
         }