iwlwifi: mvm: check if vif is NULL before using it

wdev_to_ieee80211_vif() might return NULL.
Check that vif != NULL before dereferencing it.

Signed-off-by: Sharon Dvir <sharon.dvir@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index b4fc86d5d7ef1252cde57cfb872c390d698b7d16..6a615bb73042504b0c7912805ce36cb70690b44b 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -467,6 +467,8 @@ struct iwl_mvm_vif {
 static inline struct iwl_mvm_vif *
 iwl_mvm_vif_from_mac80211(struct ieee80211_vif *vif)
 {
+       if (!vif)
+               return NULL;
        return (void *)vif->drv_priv;
 }