mac80211: allow passing NULL to ieee80211_vif_to_wdev()
Simply return NULL in this case, instead of crashing. This can
simplify callers that would otherwise have to check for this
explicitly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 7fb2c7b..89e089c 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -703,7 +703,12 @@
struct wireless_dev *ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
{
- struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+ struct ieee80211_sub_if_data *sdata;
+
+ if (!vif)
+ return NULL;
+
+ sdata = vif_to_sdata(vif);
if (!ieee80211_sdata_running(sdata) ||
!(sdata->flags & IEEE80211_SDATA_IN_DRIVER))