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mac80211: allow passing NULL to ieee80211_vif_to_wdev()

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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>
This commit is contained in:
Johannes Berg 2015-06-10 20:18:55 +03:00
parent e996ec2a4d
commit 6513e98e05
1 changed files with 6 additions and 1 deletions
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7
net/mac80211/util.c
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@ -703,7 +703,12 @@ EXPORT_SYMBOL_GPL(wdev_to_ieee80211_vif);
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))