[RFC bluetooth-next 01/20] 6lowpan: ndisc: don't remove short address

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This patch removes handling to remove short address for a neigbour entry
if RS/RA/NS/NA doesn't contain a short address. If these messages
doesn't has any short address option, the existing short address from
ndisc cache will be used.

Signed-off-by: Alexander Aring <aar@xxxxxxxxxxxxxx>
---
 net/6lowpan/ndisc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/net/6lowpan/ndisc.c b/net/6lowpan/ndisc.c
index 86450b7..941df2f 100644
--- a/net/6lowpan/ndisc.c
+++ b/net/6lowpan/ndisc.c
@@ -101,8 +101,6 @@ static void lowpan_ndisc_802154_update(struct neighbour *n, u32 flags,
 		ieee802154_be16_to_le16(&neigh->short_addr, lladdr_short);
 		if (!lowpan_802154_is_valid_src_short_addr(neigh->short_addr))
 			neigh->short_addr = cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC);
-	} else {
-		neigh->short_addr = cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC);
 	}
 	write_unlock_bh(&n->lock);
 }
-- 
2.9.0

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