diff options
Diffstat (limited to 'net/mac80211/mlme.c')
| -rw-r--r-- | net/mac80211/mlme.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 54a2a1db98a..87743e47a05 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2492,6 +2492,13 @@ int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + if (len == 0 && ifmgd->extra_ie_len == 0) + return -EALREADY; + + if (len == ifmgd->extra_ie_len && ifmgd->extra_ie && + memcmp(ifmgd->extra_ie, ie, len) == 0) + return -EALREADY; + kfree(ifmgd->extra_ie); if (len == 0) { ifmgd->extra_ie = NULL; |